Mobil Delvac 1 Oil

[Vaughn MacKenzie]

Hmmm, I just switched to Delvac 1, and I did an oil analysis at 3,100 miles. Since my iron count was a mere 9 PPM, I would say there wasn't too much cam & lifter wear going on. That was using the cheap 24v Fleetguard filter. Blackstone said "if the iron count was any lower, engine wear would be virtually non-existant. " There was a lot of stop & go, short trip driving on that oil. I don't see how a quality synthetic would INCREASE wear on components.

As for extended drain intervals, I am going to run my oil to 10K, analyze it, then go further if it's still in good shape. I'm experimenting with standard filters for the time being, using the Microglass (12-valve)filter. My hope is all will hold up good for a 20K-25K drain interval with 5K filter changes. I'm doing this to basically monitor wear rates and standard filtering effectiveness.

I am considering going with Amsoil 5W30 HD diesel oil at next change, since it is one API spec ahead of the Delvac 1. The Delvac is CG-4, and I believe the Amsoil is at CH-4 which is more stringent in terms of soot control and viscosity, etc.

Vaughn

BOMBin' with SYNTHETICS

------------------
1998 3/4T Quad Cab 4x4, 24-valve, 5-speed w/3. 54 rear, White over Driftwood, Fog Lamps, Air Dam, Agate leather with most options.
Bosch RV Injectors
245/75/16 Kelley Safari MSRs on M/T Classics, DeeZee running boards, diamond tread bedrail & tailgate protector.
56,250 miles (1/23/00)

 

[T.Fogie]

I checked with Cummins here in Montana, and checked for information on the net and Cummins does recommend using synthetic oil, but only after 10K miles. I put 20K on mine before changing to Delvac 1. No problems here.

-----------------------------
99 QC LWB 4X4 5 Spd Rhino Liner

 

[JohnJoyce]

I would not worry about the CG-4 rating. I am sure Delvac 1 will meet the specs of CH-4, it just takes some companies longer to submit it for the test to get the rating. I know that the CG-4 may even be better for my 97 12v, since that is the oil it was designed to use. More soot control may not be better, just a guess...


------------------
1997 4x4, 3. 54 rear, 5 spd, red, vinyl floors.
Banks Stinger Plus, BD 4" cat back (minus muffler), K&N (not Scotty YET!), Delvac 1, Lund cold front, Shelf-it overhead storage system, CB mounted overhead like the BIG rigs!
Pull Trailswest 2 horse slant, 1972 8' Bell slide in camper (heavy son of a gun), Sylvan 1750 jon with 60/45 Merc. Jet prop, and one great hunting Black Lab

 

[DiverDave]

I was getting ready to change to a full synthetic oil on my next oil change (at 9000 Miles). Heard Delvac 1 was the best. I went to the Mobil web site and got the specifications on the oil, and was impressed.
I called Cummins (1-800-diesels) to see if I could get on a extended interval oil change program using this oil. I was told by Cummins that "the use of a FULL sythetic oil, WOULD cause premature failure of the Valves and Cam in the Cummins "B Series" engine because of the type of valves and tapits use... "

I personaly do not understand how a oil with all the attributes of Delvac 1 could cause a problem. I just thought I should pass this on the everyone. If anyone has information from Cummins or others, PLEASE post.

I want my engine to last as long as possible, so for now I will stick with conventional oil.

(PS: I read several of the old posts on this topic after talking with Cummins, but did not note any which addressed the premature Valve/Cam problem)



------------------
Diver Dave Driving a:
2000, 2500 Quad Cab, 4 x 4, SLT, 5 Spd, 3. 54, Camper Package, Trailer Package, Snowplow Prep,Urethane spray in bed liner, CoverMaster fiberglass cap, Born on 10-20-1999

 

[amsoilman]

Horseman,
There are a few differences between the CG-4 and the CH-4 specifications.

Differences between API CH-4 and API CG-4 include more severe aeration and corrosiveness tests and new tests for volatility and shear stability.

API CH-4 performance benefits include the following.

Mack T- 8E tests for soot-related viscosity increase; prevents excessive viscosity under high-soot conditions and ensures oil flow to critical parts. API CH-4 oils will be required to carry 4. 8 percent soot, compared to API CG-4 oils that only were required to carry 3. 8 percent soot.

Mack T- 9 test for ring, liner and bearing wear; ensures engine durability and long engine life. Ring, liner and bearing wear were not addressed in the API CG-4 rating.

Cummins M-11 test for crosshead wear. Filter plugging and sludge; prevents excessive valve train wear and ensures increased filter life and reduced engine deposits, all in high soot conditions. Engine manufactures experienced some field problems with excessive valve train wear with API CG-4 oils.

Roller Follower wear test; provides improved engine durability. The CH-4 limit is 33 percent more severe than was the CG-4 limit.

Sequence III E test for oil oxidation; prevents excessive viscosity increase due to high temperature oil oxidation and ensures oil flow to engine parts. The CH-4 pass/fail limit is more severe than that of the CG-4 oils.

Orbahn shear stability tests for viscosity loss due to polymer shearing; better maintenance of oil film for reduced wear.

The CH-4 shear stability requirement is more severe than that of CG-4 oils.

Best regards,

Wayne
amsoilman

------------------
94'SLT 4X4 AT/White in color. Factory Tow Hooks & Running Boards. Amsoil By-Pass filter, Amsoil Air cleaner,and all fluids are Amsoil. Optima "Red Top" batteries.
BD exhaust Brake, BD Torque Lock, BD Torque Converter, Dr. Performance Stage II Injection Pump. Mag-Hytec Diff Cover,Mag-Hytec Transmission Pan, Isspro Pyro, Boost,Oil temp Gauges mounted in 3 Gauge post mount. One gauge monitors Engine Oil, Trans, Diff. Temps.

 

[DiverDave]

Talked with Cummins again after posting. Cummins rep. read the memo to me regarding synthetic oil. The memo only talked about Mobil 1 0W30 oil. When I asked him specificly about 5W40 Delvac 1, and explained to him I was taking names and notes, he refurd me to their Lube Specialist, who is to get back with me on Wed. Feb. 2nt. MORE TO FOLLOW... .

PS: John West of the GREAT LAKES TURBO DIESEL REGISTRY (New Chapter) sent me the following. I've dropped a couple of lines that did not address the topic:

Thanks for the compliment David,
I hadn't looked at the TDR site to see if they posted my truck yet.
I have been using Delvac 1 for 33,000 miles now, and have only
changed it once. That was mostly because I was nervous
about running the same oil for 15K miles. But when the oil
sample analysis came back, the wear levels were so low (below the
range associated with normal wear by Cummins in terms of parts per
million) and the viscosity breakdown non-existent, I could have left
the oil in indefinitely. The current batch has 18K on it, and shows no sign
of breakdown or contamination. I now sample the oil every 5K and put on a
fresh filter with a new quart in it. I spoke with two people before I
switched
to the synthetic - Jim Jessup (812-763-7618) of Cummins, Columbus IN.
Jim wrote the original Cummins B & C series service manuals. He is a master
mechanic and knows as much about these engines as anybody on the planet.
He whole-heartedly recommends synthetic oil & lube anywhere you can put it.
He has a 55 gal. drum of Castrol Syntec in his garage for his wife's
Expedition.
Jim did a valve lash adjust on mine at 100K miles, and said my engine could
last
400 to 500K judging by the cleanliness of my valvetrain and covers.
The other person is a buddy of mine who's father runs American Sightseeing
Tours
in Chicago. They have several hundred Cummins and DD engines in their
buses,
and use nothing but synthetic oils. They have found impending failures
(bearings
usually) by sample analysis, and routinely get half a million miles out of
their
motors in very harsh conditions. The best part of the synthetic oil for me
is
the 5w behavior in cold weather. The engine starts and revs much easier
than
with the 15w stuff. I haven't figured out the break even point economically
because there probably isn't one. At $18/gallon, the Delvac is pretty
steep,
but that is the ONLY drawback I can find. I will run the current batch
until the
viscosity breaks down - which could be 25K or 50K. Don't know yet.
When I called Mobil's tech line, their man gave me the standard party line -
"follow the manufacturer's recommended... . " response when I asked him about
extended intervals. I said "Cut the crap - my engine is almost out
of warranty, I use sample analysis, and I want to use your oil. How long
can I go?"
He replied "We don't know. As long as it's clean and the viscosity stays
95% or so
of the new value, keep it in. It can last forever. " That's what I wanted
to hear.
I also have a buddy who writes the TDR periodically - David Koetter. Check
issue 22 or 23 or 24 for his letter. He has five or six Ram TD's and pulls
16,000#
trailers all day every day in his construction business. He uses Schaffer's
synthetics
in everything except for Amsoil in his automatics. David has his trucks
tuned to
300 HP and 700 ft-lbs. (also by Jim Jessup). He has yet to open up anything more than a valve cover
with the synthetics.
He also runs in truck pulls and wins regularly.
So as far as I can tell, synthetic oil is the way to go.
I plan on making the March 25the meeting - are you?
JW



------------------
Diver Dave Driving a:
2000, 2500 Quad Cab, 4 x 4, SLT, 5 Spd, 3. 54, Camper Package, Trailer Package, Snowplow Prep,Urethane spray in bed liner, CoverMaster fiberglass cap, Born on 10-20-1999

 

[Eino]

Will someone please list the DELVAC 1 SPECIFICATIONS using a similar format that has been posted for AMSOIL 5W30 HD SYN. DIESEL OIL and for AMSOIL 15W-40 HD DIESEL AND MARINE OIL?

------------------
99 QC Diesel,5spd, white,Luverne SS step bars, Mopar long mud flaps, A. R. E. cap with walk thru door, SS rock side panels, JC Whitney front bumper 14" guards, BED RUG box liner, diamond plate bed rail and bulk head covers.




[This message has been edited by Eino (edited 02-01-2000). ]

 

[DiverDave]

EINO:

This is the sheet right off the Mobil 1 Page.
Hope this tells you all you need to know. It seems like it is the perfect oil, but I am not an oil guru... .

Mobil Delvac 1®
High-Performance Synthetic, Heavy-Duty Diesel Engine Oil


Description
Mobil Delvac 1 high-performance diesel engine oil contains high-quality synthetic base stocks and a unique additive system. It provides outstanding high-temperature detergency and all-temperature dispersancy, with optimized resistance to thermal degradation and oxidation, wear and corrosion.

Mobil Delvac 1 carries an SAE 5W-40 viscosity rating. It has all the advantages of an SAE 40 weight oil without the higher oil consumption inherent in multigrade oils that use very light mineral oil base stocks. Because synthetics have higher boiling points than conventional oils, Mobil Delvac 1 does not evaporate as readily in the high-temperature piston ring area of turbocharged diesel engines.

Mobil Delvac 1 has the same viscosity as most SAE 40 oils at the high end of the temperature-viscosity scale. However, because of its higher viscosity index and unique molecular structure, it provides a better protective film at higher temperatures than conventional oils. Mobil Delvac 1 remains fluid at sub-zero temperatures as low as -54° C (-65° F), and provides rapid cold-engine start-ups and warm-ups.

Mobil Delvac 1 can provide satisfactory lubrication at temperatures up to 100 degrees above the upper limit for conventional mineral oils. It is fully compatible with conventional heavy-duty diesel and gasoline fleet engines. It also provides unsurpassed protection against soot related viscosity increases in low emission diesel engines.

Mobil Delvac 1 has long drain capability and can be extended in service beyond the builder recommmended drain interval in both diesel and gasoline engines. Consult your Mobil representative for specific recommendations.

Mobil Delvac 1 will provide outstanding wear protection and deposit control in the most demanding diesel engines of Cummins, Caterpillar, Mack, Navistar, Detroit Diesel, and others. It is balanced to provide optimum engine life until overhaul, in both high-loaded, thermally stressed diesel engines and units operating at lower speeds in pickup-and-delivery service.

Mobil Delvac 1 exceeds the requirements of:

- API CG-4, CF-4, CF, SJ, SH
- Mack EO-M, EO-L, EO-L Plus, EO-K/2
- Detroit Diesel 7SE 270
- Caterpillar 10 TBN requirement
- Caterpillar 1N/1K performance
- Extended Sequence IIIE, VE, L-38
- 2. 0% distillation at 700° F.

Application
Mobil Delvac 1 is recommended for diesel- and gasoline-powered fleet vehicles, such as over-the-road, off-the-road, truck rental, pickup-and- delivery, utility, and school bus fleets. It is capable of providing fuel economy benefits of up to 3% and more in heavy-duty diesel engines with as much as a 40% reduction in oil make-up in over-the-road service.

When Mobil Delvac 1 is used in an engine for the first time, no system preparation is necessary other than proper draining and installation of a new filter. In an emergency, conventional oil can be used as make-up for Mobil Delvac 1, but such mixing may lower the performance of Mobil Delvac 1. Do not dilute crankcase oil with gasoline or kerosine in cold weather. The diluent will not improve cold cranking and may have an adverse effect on the performance of Mobil Delvac l.

In addition, Mobil Delvac 1 is recommended for extended drain performance in truck- or trailer-mounted refrigeration units.

Characteristics
Typical characteristics are shown in the data table.
Advantages
- New super high performance in both diesel and gasoline engines
- Performance surpasses all conventional oils
- Enhanced TBN wear/cleanliness protection
- Diesel quality reserve for longer engine life
- Extended engine life until overhaul in 1998-certified and pre-1998 diesel engines
- Superior soot control in 1998-certified diesel engines
- Enhanced protection against bore polishing and engine scuff
- Unique oil consumption control
- Extended high-temperature and stop-and-go gasoline performance
- Wide-temperature-range protection
- Long drain capability
- Documented fuel economy
Health and Safety
Based on available toxicological information, it has been determined that this product poses no significant health risk when handled and used properly. Information on use and handling, as well as health and safety information, can be found in the Material Safety Data Sheet which can be obtained from either your local distributor, the Internet http://www.exxon. mobil.com, or by calling 1-800-662-4525, prompt 2.

For additional technical information or to identify the nearest U. S. Mobil supply source, call 1-800-662-4525.


Mobil Delvac 1
Product Number 44111-3
SAE Grade 5W-40
Gravity, API 31. 7
Pour Point, °C (°F) -54 (-65)
Flash Point, ASTM D 92, °C (°F) 230 (446)
Viscosity

cSt at 40° C

cSt at 100° C

SUS at 100° F

SUS at 210° F

Cranking Viscosity, cP at + 25°C

Pumping Viscosity, cP at -35°C

Borderline Pumping Temperature, °C

HT/HTS, cP at 150°C
91. 0
15. 2
462
80
2,750
17,000
-44
3. 9
Viscosity Index 186
Sulfated Ash, wt % 1. 2
TBN, ASTM D 2896 11
Color, ASTM D 1500 5. 0


Mobil Oil Corporation
TECHNICAL PUBLICATIONS
3225 Gallows Road, Fairfax, Virginia 22037-0001

------------------
Diver Dave Driving a:
2000, 2500 Quad Cab, 4 x 4, SLT, 5 Spd, 3. 54, Camper Package, Trailer Package, Snowplow Prep,Urethane spray in bed liner, CoverMaster fiberglass cap, Born on 10-20-1999

 

[JohnJoyce]

Wayne,
I appreaciate your quick response. I was hoping someone would drop in and give more info.
Question though... From what I remember hearing, higher soot control is only better for newer trucks that meet newer EPA standards (ie 24v). Doesn't higher soot control only lower emisions? Or does it keep it from buiding somewhere in the engine???
Thanks,
Jack

------------------
1997 4x4, 3. 54 rear, 5 spd, red, vinyl floors.
Banks Stinger Plus, BD 4" cat back (minus muffler), K&N (not Scotty YET!), Delvac 1, Lund cold front, Shelf-it overhead storage system, CB mounted overhead like the BIG rigs!
Pull Trailswest 2 horse slant, 1972 8' Bell slide in camper (heavy son of a gun), Sylvan 1750 jon with 60/45 Merc. Jet prop, and one great hunting Black Lab

 

[DMarriott]

I did a lot of reaserch on mobil Delvac 1 a couple of months ago ( check the arcives) and I think there is some confusion. First I think Cummins is telling you not to use a synthetic because mobil 1 dose not have a CH rating. The CG-4 and CH-4 ratings are:The SJ rating is for sliding tappets.

CG-4 Introduced 1995. For sever duity high speed 4 stroke diesel engines using fuel with less than 0. 5% weight sulpher. CG-4 oils are required for engines meeting 1994 emission standards.

CH-4 Introduced Dec 1, 1998. For high speed 4 stroke diesel engines designes to meet 1998 emission standards. CH-4 oil are specifically compounded for use withfuels ranging in content up to 0. 5% weight sulpher.

The SJ rating:

SJFor gasoline powered engines beginning with 1997 models.
Oil designed for this service level provides fuel economy, lower volatility and lower phosphorous limits over previous SH catagory.

And as you can see below Mobil Delvac 1 is rated CH-4/SJ and meets Cummins CES20076, CES20071. If you look at Delo or Rotilla you will find the same ratings. I copied this from the Mobil site just now. I read the copy
that Diver Dave copied but the above ratings seemed to be missing.

Mobil Delvac 1®

Product Description

Mobil Delvac 1 Synthetic high performance diesel engine oil contains high-quality
synthetic base stocks and a unique additive system. It provides outstanding
high-temperature detergency and all-temperature dispersancy, with optimized
resistance to thermal degradation and oxidation, wear, and corrosion.

Mobil Delvac 1 carries an SAE 5W-40 viscosity rating. It has all the advantages of an
SAE 40 weight oil without the higher oil consumption inherent in multigrade oils that use very light-mineral oil base stocks. Because synthetics have higher boiling points than conventional oils, Mobil Delvac 1 does not evaporate as readily in the high-temperature piston ring area of turbo-charged diesel engines.

Mobil Delvac 1 has the same viscosity as most SAE 40 oils at the high end of the
temperature viscosity scale. However, because of its higher viscosity index and unique
molecular structure, it provides a better protective film at higher temperatures than
conventional oils. Mobil Delvac 1 remains fluid at sub-zero temperatures as low as
-54°C (-65°F) and provides rapid cold-engine start-ups and warm-ups.

Mobil Delvac 1 can provide satisfactory lubrication at temperatures up to 100 degrees
above the upper limit for conventional mineral oils. It is fully compatible with conventional
heavy duty diesel and gasoline fleet engines. It also provides unsurpassed protection
against soot related viscosity increases in low emission diesel engines.

Mobil Delvac 1 has long drain capability and can be extended in service far beyond the
builder recommended drain interval in both diesel and gasoline engines. Consult your
Mobil representative for specific recommendations.

Mobil Delvac 1 will provide outstanding wear protection and deposit control in the most
demanding diesel engines of Cummins, Caterpillar, Mack, Navistar, Detroit Diesel, and others. It is balanced to provide optimum engine life until overhaul, in both high-loaded, thermally stressed diesel engines and units operating at lower speeds in pickup-and-delivery service.

Mobil Delvac 1 exceeds the requirements of:

API CH-4, CG-4, CF-4, CF,SJ, SH
Mack EO-M Plus, EO-M, EO-L Plus
Cummins CES 20076, CES 20071
Detroit Diesel 7SE270
Volvo VDS
MTU/DDC Category 2
Caterpillar deposit performance
2. 0% distillation at 700°F

Applications

Mobil Delvac 1 is recommended for diesel- and gasoline-powered fleet vehicles, such
as over-the-road, off-the-road, truck rental, pickup-and-delivery, utility, and school bus
fleets. Mobil Delvac 1 is capable of providing fuel economy benefits of up to 3% and more in heavy duty diesel engines, with as much as a 40% reduction in oil make-up in
over-the-road service.

When Mobil Delvac 1 is used in an engine for the first time, no system preparation is
necessary other than proper draining and installation of a new filter. In an emergency, conventional oil can be used as make-up for Mobil Delvac 1, but such mixing may lower the performance of Mobill Delvac 1. Do not dilute crankcase oil with gasoline or
kerosene in cold weather. The diluent will not improve cold cranking and may have an
adverse effect on the performance of Mobil Delvac 1.

In addition, Mobil Delvac 1 is recommended for extended drain performance in truck
trailer-mounted refrigeration units.

For additional technical information or to identify the nearest U. S. Mobil supply source,

Bottom line. No problem using this oil. Like I said check tha arcives under Mobil Delvac 1 there is a lot if info there.

Don #ad


[This message has been edited by Don Marriott (edited 02-01-2000). ]

[This message has been edited by Don Marriott (edited 02-02-2000). ]

 

[FL60cummins]

#ad
If you're worried about the oil messing with the engine's durability why not stick with one that carries a warranty??? #ad

>>like amsoil #ad


If you want dealer prices call them @
1-800-777-7094 and give them my zo#417944 #ad


Happy Dieseling #ad

 

[FL60cummins]

#ad
P. S. >>>
ame-1g(gallon15-40synthetic diesel oil) is $14. 90 dealer cost #ad

ame-04 is a four gallon case and it is $56. 80 dealer cost #ad


dealer cost is your cost... #ad
#ad
#ad
#ad
#ad


Compared to the $18 for the delevac it is a pretty good deal!!


[This message has been edited by FL60cummins (edited 02-04-2000). ]

 

[DocStressor]

Great info in this thread, guys. Another possible source of confusion is that there are still containers of Delvac 1 out there without the CH-4 designation. It was always rated SJ. But I doubt that Mobil needed to reformulate this oil. It is expensive and time consuming for a company to go through the certification process. Since most Devac 1 customers are fleets with engines designed for CG/F-4, there was probably no great rush to certify the oil CH-4 for use in our “little” trucks. Just like with Amsoil and PB2000, there was a delay between when the CH-4 spec was required for low emission diesels and when Amsoil, Delvac 1,and Valvoline Premium Blue 2000 were certified CH-4. They were always fine oils for their intended purposes and I doubt that they needed to be reformulated, just tested.

Horseman, the requirement for increased soot capacity in the CH-4 spec was because certain low emission diesel designs (but I don’t think Cummins) increases the amount of soot produced by the engine. But I would always use a CH-4 oil even in a 12 valve because the spec ensures additional wear protection and longevity as per Amsoilman’s post. Much as we may not like emission standards, they have forced great improvements in all oils. For example, how may folks have had an oil analysis come back saying that the oil was used up? Not very many, I bet. Even conventional oils protect much longer than the vehicle manufacturers lead you to believe. Manufacturers operate under the worst case scenario for warrantee purposes. They don’t care how much we have to spend changing our oil at frequent intervals and it is a way to keep people coming back to the dealer for other service.

Vaughn, you’ve got a nice experiment going there. If more of us would collect and post oil analysis date with different oils using fixed change intervals, we might actually discover that one or another oil is actually “better”. You can’t figure that our just from the specs. I’ll join your experiment. I’ll change every 7,500 until the warrantee is gone. I will use Delvac 1 for 2 consecutive changes, then Amsoil 5W30 for 2 changes, and keep on alternating until I get tired of paying the extra money for the Amsoil (anything for science). I’ll post the milage and oil analysis results. Hope I put the miles on fast enough to keep you interested.

------------------
1999 Quad cab 2500, SB, SLT, 4X4, 5-speed, 3. 54, tow and camper package, Lance 820 camper, Lance cabover stabilizers, Rancho 9000s, Airlift airbags


[This message has been edited by Lee Weber (edited 02-01-2000). ]

[This message has been edited by Lee Weber (edited 02-01-2000). ]

 

[robw]

My rotella doesn't have the SJ rating. It only has the CG-4 rating! Does this mean that rotella is not to be used in these trucks???

------------------
98. 5 Driftwood 2500HD QC 5sp

 

[DocStressor]

robw, Shell Rotella T is rated CH-4 and SJ. According to the Shell web site, Rotella WAS reformulated from the previous version.

------------------
1999 Quad cab 2500, SB, SLT, 4X4, 5-speed, 3. 54, tow and camper package, Lance 820 camper, Lance cabover stabilizers, Rancho 9000s, Airlift airbags

 

[Wineman]

Question for all, Who has the best price out there for Mobil 1 Delvac ?? It's tough to find here is So. Cal. Just got my last 3 gal. for $26. 25 each. #ad
#ad
Help ! I've just been robbed!!!! Looking for better source anywhere on the West Coast, willing to drive anywhere(who isn't)... Thanks

------------------
Y2K -2500 QC,LWB,ISB,4X2,6-Spd,SLT+,4:10 LSD,
Sport Pkg, TT Pkg. Rancho RS9000's,K&N Air Filter,Mag-Hytec,Mobil 1 Delvac,Innovation Streetsport,Banks Stinger+ soooon ... .

 

[amsoilman]

Horseman,
The better soot control does keep the engine cleaner in terms of soot.
Low emission diesel designs increase the amount of soot produced by the engine.

Nearly all newer designed engines will require the use of the CH-4 oils.

As a matter of fact, the next diesel oil category, API PC-9, must handle 30 to 50 percent more soot than the current API CH-4 category handles. Model year 2002 diesel engines will be designed with cooled exhaust gas recirculation (EGR) systems.

EGR increases oil soot content dramatically by routing soot-laden exhaust back into the combustion chamber where it may slip past rings and into the circulating oil.


Wayne
amsoilman

------------------
94'SLT 4X4 AT/White in color. Factory Tow Hooks & Running Boards. Amsoil By-Pass filter, Amsoil Air cleaner,and all fluids are Amsoil. Optima "Red Top" batteries.
BD exhaust Brake, BD Torque Lock, BD Torque Converter, Dr. Performance Stage II Injection Pump. Mag-Hytec Diff Cover,Mag-Hytec Transmission Pan, Isspro Pyro, Boost,Oil temp Gauges mounted in 3 Gauge post mount. One gauge monitors Engine Oil, Trans, Diff. Temps.




[This message has been edited by amsoilman (edited 02-02-2000). ]

 

[Oil Man]

Wineman, Look in the yellow pages for oil dealers that carry Mobil. Ast them to order the Mobil Delvac-1 for you. They would be glad to do that. If you want my assistance e-mail me I'll find oue for you.

 

[bilford]

Sometime last year they changed the color of the Delvac 1 gallon jugs from black to silver. The black jugs say "Double Cummins NTC-400 performance". The siver jugs don't mention Cummins, but still say exceeds Mack, Cat and DD requirements. I use Delvac 1 in cold weather in all my engines including my ISB. And will continue. Cheers.

 

[DiverDave]

Well, just got off the phone with Cummins. They said that the information regarding the "Premature Failure of the Cam and tapits... " was only in discussing 0W30 synthetic oil.

They further said that the Mobil Delvac 1 5W40 would give me much better cold weather starting, but did not know it it would justify the extra cost. I asked them about extending the drain interval and they said not to exceed the 7500 mile interval recommended by Dodge. I told them Dodge recommended 3000 miles if any of several critia were met. I read them the critia and they said Dodge was just being cautious. They indicated that unless I was pulling, on a regular basis, more than the truck was rated for, or real dusty conditions all the time the interval could be 7500 miles.

#ad
SO... I am switching to the Mobil Delvac 1 5W40 oil on my next oil change. #ad


Like the man at Mobil said to me "If you want to go to bed at night, knowing you have the best oil you can use in your Diesel, then use Delvac 1".

Thanks to anyone that sent me information on the topic. #ad


------------------
Diver Dave Driving a:
2000, 2500 Quad Cab, 4 x 4, SLT, 5 Spd, 3. 54, Camper Package, Trailer Package, Snowplow Prep,Urethane spray in bed liner, CoverMaster fiberglass cap, Born on 10-20-1999



[This message has been edited by DiverDave (edited 02-03-2000). ]