Injectors and Stanadyne???

[RCone]

Don't know if this is the right place to post this topic (maybe should have been on accessories forum), but here goes. I read somewhere on this website that General Motors says DO NOT use fuel additives, turns their Duramax injectors a rust color which would indicate clogging to me. Do we have a problem using additives with the injectors on our CTD's?

 

[illflem]

Cummins also says "no fuel additives are necessary nor recommended". But they sell them. It's your call.

 

[RCone]

Thanks for the feedback, didn't know that. But in the real world, I would suspect lots of people use additives. I don't really care bout raising Cetane rating, and I don't have a problem with geling as Oregon doesn't get that cold, but what I mainly added it for was to hopefully provide better lubrication to the pump. I wonder what our CN and Alaska cold-weather friends have to say about the subject.

 

[Bob Kottre]

After the third injecter pump was installed at 55K miles I start adding 8 ozs of two cycle motor oil to the fuel tank at each fill up. .

two cycle motor oil is desighned to burn where as regular motor oil is not... Have 74k miles on truck now with no injecter problems.

So far it has worked for me.

 

[dalton4]

I use an additive when we go to winter blend and especially when the fuel is all #1 diesel. I use very little during the summer with #2. I have 100K miles with no injector/pump problems.



Jerry

 

[6naline01]

marvel mystery oil

Anyone have any experience with this product, using it in the fuel system? DOC NIELSEN

 

[Big_Daddy_T]

I too am on my third pump and know those on there 4th or 5th. We run #1 a long time due to the length of the winter. Our pumps werent made to run on #1 with low fuel pressure. Low pressure got my first two now I have a gauge and 5 gals of stanadyne. repeat after me lubricity is your friend lubricity is your friend. Now that you got it buy a 50 gallon drum of stanadyne and share with your friends.

P. S. dont use ATF

 

[rbiggs]

My 1997 Dodge was born and raised in Alaska until recently. Winter grade diesel in alaska is hard on pumps due to most of the lubricants in the fuel being removed to prevent gelling during cold temperatures. I have used the Stanadyne fuel additive since 1997, mostly in the winter to help keep my pump lubricated and it does lower the pour point for you fuel. I changed out the pump at about 115,000 miles, only because I wanted more hp. I use stanadyne in the summer time on occasion but not regularly. I have experience no problems with it. I don't place much faith in over the counter additives which you find at places like Wal Mart ect. Hopes this help you.

 

[Vaughn MacKenzie]

Originally posted by illflem

Cummins also says "no fuel additives are necessary nor recommended". But they sell them. It's your call.

That is old news. Cummins has since recommended a quality additive for the 24-valves.



Vaughn

 

[Pit Bull]

I use the Rotella fuel additive. I figure they make good oil then they would make a good fuel additive. Plus you c an get 4 gallons for $33. 00 at Sam's club. 8oz's treats 32 gallons of fuel.

 

[fox]

Doc Neilsen, You ask about MM oil. I know I risk getting "sprayed on" but when I had my 95 I could bet money with people that it would get two more miles per gallon when using it! Every time!

I can;t and won't try to explain it , it just did it and every time.

I was told not to use it by a diesl guy.

He didn't like the mistery part.

 

[illflem]

Originally posted by Vaughn MacKenzie





That is old news. Cummins has since recommended a quality additive for the 24-valves.



Vaughn

Beg to differ Vaughn, click here

 

[Vaughn MacKenzie]

Originally posted by illflem

Beg to differ Vaughn, click here

What I saw (quite a while ago) was a discussion about the problems of the VP-44 with a Cummins tech or Cummins representative. I remember they commented the VP44 didn't turn out to be as reliable as they'd hoped it would be. It was in this conversation or article where it was suggested or recommended to use a quality additive, such as Cummins diesel fuel conditioner (of course) to increase lubricity to the injection pump. Where this article or discussion is I don't know, it was well over a year ago and in a thread that is well buried by now.



I guess in a way we're both right

 

[Dave MacArthur]

The Alaska Guys;



Are they replacing those pumps under warranty? Did anyone at D/C ever tell you to use an additive?



Dave

 

[Behr]

Lubrication

Ok... I realize this thread is a few months old... but I do feel "Fuel Pump" lubrication is an important topic.



I am new to TDR and some abreviations here are new to me ... but some one mentioned MM oil. Just what is MM oil?



I have read a good number of threads on Lubricity of the pump... and what Cummins says to do and not to do.



I think maybe we should look more at the manufacturer of the pump for lubrication questions. Cummins built the engine... and the pump built by Bosch. I think we should be homing in more what Bosch recommends.



Also I am reading of people in TDR using ATF and 2 cycle motor oil as an added lubricant to their fuel.



Comments on this would bennefit the readers of TDR... .



By the way... I wish pass on the best of "Seasons Greetings" to all the members and readers of TDR.

 

[Bob Wagner]

I am new to TDR and some abreviations here are new to me ... but some one mentioned MM oil. Just what is MM oil?







Answer: <b>Marvel Mystery Oil</b> No Thanks

 

[Shovelhead]

As to the subject of ATF as a fuel suppliment/lubricant.

Save it for the transmission.

ATF now has friction modifiers and other ingredients that may work ok in the mechanical injection pumps, but tend to give the VP indigestion. Stick to approved fuel conditioners.

JMHO



Ed

 

[Gary - K7GLD]

All injector cleaners and fuel additives are NOT created equal - some contain chemicals that MIGHT attack specific parts of yer fuel system - in gas rigs where a vehicle sits for long periods of time, I've heard of SOME instances where injector cleaners have eroded and damanged some of the protective linings in fuel tanks, allowing eventual rust deposits.



In the case of the GM warning relative to the Duramax, I have heard that the fuel addives aren't any particular problem for the INJECTORS - but that the additives DO attack and corrode other parts of the fuel system, especially the part of the aluminum heads some of the fuel passes thru on the way to the injectors and that then creates a rust-like deposit that eventually cloggs the injectors...



Old-wives tales?

 

[BatMan01]

"Fuel or oil additives are not necessary on the 24-valve engine, provided factory recommended oil and fuel specifications are followed. Consult your owner's manual for proper guidelines. " I cut and pasted this from the Cummins site jsut to make sure we are all on the same sheet of music. Diesel #2 meets Cummins spec. for lubricity. Most winter blends and Diesel #1 does not meet the spec. In this situation a fuel additive is recommended. My problem is how much lubrication is needed and which additive meets that. All the fuel additives i have found, mention on the label that they add lubrication but do not say how much. ?

 

[BushWakr - RIP]

I have used Stanadyne PF all year round, for the last 3 years.

The 1st Gen trucks run the VE pump which cooled/lubed SOLELY by return fuel. To date I've had no problems with either the pump or the injector system.

Until just recently my younger brother was also using the SPF and he had no problems either. Late last year he changed over to the Amalgamated #15 (?) which has improved his mileage, idle and general performance.



Bob.