Synthetic oil reason?

[amsoilman]

You mention above that synthetic oil has "better lubricity". If you mean it is more slippery and reduces drag, I would like to see hard evidence for that statment. I have been hearing that idea for years and believe it is one of the misconceptions about synthetics. Major trucking companies have done 100,000 mile tests and found no increase in mileage (measurement for reduced drag). I'm a firm believer in synthetics but question better lubricity as a selling point.

A few years back (Oct 1995) there was a SAE Technical paper written #952553 concerning "A Synthetic Diesel Engine Oil With Extended Laboratory Test & Field Service Performance".



This was their conclusions:

Many units have operated on SYN-DEO in heavy-duty, long-haul service at extended oil drain intervals, with some units on drain intervals beyond 100,000 miles. Even under these conditions, SYN-DEO has consistently provided measurable benefits in terms of improved engine performance. (SYN-DEO) Means Synthetic Diesel Oil)

Fleet tests with SYN-DEO are being conducted in Caterpillar, Cummins, Detroit Diesel and Mack engines.



CONCLUSIONS



An SAE 5W-40 synthetic heavy duty diesel engine oil exceeding CG-4, CF-4, CF-2, CF, SH, and EC performance specifications has been developed. Results from this study indicate that formulating an optimized high performance additive system utilizing synthetic base stocks provides a product with a combination of unique physical properties, and laboratory and field engine performance attributes. The high level of performance documented for SYN-DEO in standard and extended-length engine tests was further demonstrated in field testing using greatly extended oil drain intervals. The successful performance of SYN-DEO in severe fleet service confirms the potential for premium synthetic diesel engine oils in extended service applications. Application of this technology offers numerous significant benefits to engine

users.



The extraordinary rheological characteristics of SYN-DEO make it well suited for applications where low temperature engine operation or high temperature oil stability are of concern. The outstanding pumping and cranking performance of this product offers excellent low temperature starting performance. At the same time, the synthetic base stocks provide a product with kinematic and high-temperature high-shear viscosities at levels typical of premium SAE 15W-40 mineral oils. Additionally, the high temperature volatility of SYN-DEO is well below that of most multigrade diesel engine oils.



2. When used at standard oil drain intervals, SYN-DEO will provide a substantial performance reserve in the areas of soot dispersancy, viscosity stability, sludge and deposit control, engine wear, and oxidation stability, with reduced Oil consumption and improved fuel economy, all of which should contribute to extended engine life.



Wayne

amsoilman

 

[Pit Bull]

Originally posted by illflem

That's because the coked oil doesn't damage the turbo, it damages your oil. The coked oil, which is very hard, returns to the oil pan on the next startup then goes on to cause wear on the oil pump before getting caught in the filter.

Just was reading on the Cummins website that turbo cool down for 30 seconds is adequate unless you've just done a long tow, then they recommend three to five minutes.

Good info thanks

 

[WadePatton]

Wall marks

I like options. When Walmart becomes the only option, you'll see why.



I also don't like supporting the most serious political and military threat in the world, Communist China.



Saw a great bumper sticker the other day.



"WalMart, Your Source for Cheap Plastic Crap"



Okay maybe we should start our own thread.



:-{} #@$%!:-laf

 

[Rman]

berg, in your thread you said "I don't see how". Yes you and about 250 million others don't see how. Just because you don't see how doesn't mean it's the right thing to do.



Like i said, i do it because of my moral obligation. I know quite a bit about business and economics, i've seen what walmart can and IS doing to america and the rest of the world for that matter.



Like Patton said this isn't the thread and i don't have hours to try and explain the intricacies of communism and its undermining effect on the youth of america. There are books on the subject though, someone here a while back (I believe it was WadePatton, gave a good reference) Read these books and see what saving 35 cents will do for communists.

 

[Hohn]

I am going to start a separate wal-mart thread... .



meet me there. .





jlh

 

[WadePatton]

OKAY, back to "why synthetic?"

I just remembered that the 1 million mile truck featured in the latest TDR had an engine replacement. I looked it up, yep sure did at 750,000 miles--attributed to a leak in the air system.



While synthetic oil probably would not have helped this particular situation. I'll bet you money that by-pass filtration and/or oil analysis would have prevented the engine from being ruined by an air leak.



Analysis might have revealed the excess dirt and bypass filtration would have removed most of it.



Dontchathink?

 

[Pit Bull]

Originally posted by rhickman

berg, in your thread you said "I don't see how". Yes you and about 250 million others don't see how. Just because you don't see how doesn't mean it's the right thing to do.



Like i said, i do it because of my moral obligation. I know quite a bit about business and economics, i've seen what walmart can and IS doing to America and the rest of the world for that matter.



Like Patton said this isn't the thread and i don't have hours to try and explain the intricacies of communism and its undermining effect on the youth of America. There are books on the subject though, someone here a while back (I believe it was WadePatton, gave a good reference) Read these books and see what saving 35 cents will do for communists.

:-laf Sorry I know you believe this and I hope you continue to do what you feel is right. I support you as long as you don't break the law or harm anyone else. That's the great thing about being an American. How an example - I just bought 50# of Black oil sunflower seeds at Walmart for $10. I've been buying it at my local feed store for $15 for 50#'s, (just because they owe me a store credit for a generator I returned to them). Everything they sell is over priced and not by 5%, more like 30%. I will continue to buy everything I can for less at Walmart. The quality is as good or better than you will find at other stores. I did find that I can by Amsoil oil at the local Feed store where I have a store credit. I found the Amsoil in the Lawn Mower section. When I question why it was not in the Automotive section they did not realize it could be used in automobiles Makes you wonder how Walmart built such a large market share

 

[Pit Bull]

Re: OKAY, back to "why synthetic?"

Originally posted by WadePatton

I just remembered that the 1 million mile truck featured in the latest TDR had an engine replacement. I looked it up, yep sure did at 750,000 miles--attributed to a leak in the air system.



While synthetic oil probably would not have helped this particular situation. I'll bet you money that by-pass filtration and/or oil analysis would have prevented the engine from being ruined by an air leak.



Analysis might have revealed the excess dirt and bypass filtration would have removed most of it.



Dontchathink?

Wade, I think your right. In my case that would provide someone other than me with a great used truck. Not many people keep anything for 750K miles. But if they did I think your reasoning is sound and it might be fun.

 

[Rman]

Originally posted by Pit Bull

:-laf Sorry I know you believe this and I hope you continue to do what you feel is right. I support you as long as you don't break the law or harm anyone else. That's the great thing about being an American. How an example - I just bought 50# of Black oil sunflower seeds at Walmart for $10. I've been buying it at my local feed store for $15 for 50#'s, (just because they owe me a store credit for a generator I returned to them). Everything they sell is over priced and not by 5%, more like 30%. I will continue to buy everything I can for less at Walmart. The quality is as good or better than you will find at other stores. I did find that I can by Amsoil oil at the local Feed store where I have a store credit. I found the Amsoil in the Lawn Mower section. When I question why it was not in the Automotive section they did not realize it could be used in automobiles Makes you wonder how Walmart built such a large market share

see you in the walmart thread

 

[fest3er]

Originally posted by fj40charles
I don't see this being an issue if you have a pryometer and you wait until the EGT reaches 300* (pre turbo) before shutdown.

I've had a pyro on my truck since about 10K miles. I *always* waited to reach 300F before shutting down, summer and winter. But by 50K miles, I was noticing the turbo was 'sticking' on cold startups, winter or summer, and wouldn't spin up until exhaust pressure was high enough. I had the dealer do the oil changes at 5K mile intervals.

I switched to synth about 62K miles, and once the crud 'washed' out, the turbo has not 'stuck' since.

So, as much as the pyro can help, it still isn't the perfect indicator.

Fest3er

 

[fj40charles]

Originally posted by fest3er

I've had a pyro on my truck since about 10K miles. I *always* waited to reach 300F before shutting down, summer and winter. But by 50K miles, I was noticing the turbo was 'sticking' on cold startups, winter or summer, and wouldn't spin up until exhaust pressure was high enough. I had the dealer do the oil changes at 5K mile intervals.



I switched to synth about 62K miles, and once the crud 'washed' out, the turbo has not 'stuck' since.



So, as much as the pyro can help, it still isn't the perfect indicator.



Fest3er

Sorry to hear about that Neal. I've never had any problems with my turbos running plain ole Rotella T. Maybe it is because I live in Texas and the winters are not too cold.

 

[berg]

Originally posted by rhickman

berg, in your thread you said "I don't see how". Yes you and about 250 million others don't see how. Just because you don't see how doesn't mean it's the right thing to do.



Like i said, i do it because of my moral obligation. I know quite a bit about business and economics, i've seen what walmart can and IS doing to america and the rest of the world for that matter.



Like Patton said this isn't the thread and i don't have hours to try and explain the intricacies of communism and its undermining effect on the youth of america. There are books on the subject though, someone here a while back (I believe it was WadePatton, gave a good reference) Read these books and see what saving 35 cents will do for communists.

:{



so i supose now i have to sell my wamart stock!! NOT!!!

 

[Rman]

SELL SELL SELL!!

 

[adsharpe]

Re: OKAY, back to "why synthetic?"

Originally posted by WadePatton

I just remembered that the 1 million mile truck featured in the latest TDR had an engine replacement. I looked it up, yep sure did at 750,000 miles--attributed to a leak in the air system.



While synthetic oil probably would not have helped this particular situation. I'll bet you money that by-pass filtration and/or oil analysis would have prevented the engine from being ruined by an air leak.



Analysis might have revealed the excess dirt and bypass filtration would have removed most of it.



Dontchathink?

Tom Olding ran a 95 over 1million on the original engine without repairs to engine. On pg. 90 of TDR Issue 40 he remarks that he used BP oil (250 gls) but on pg. 91 he says he put in over 500 gls of oil.



The Cummins Powermaster reports that Cummins does not recommend synthetic to B owners as the recommended change intervals should be used and synthetic is not cost effective.



Naturally, I think anyone should run whatever they want but cough up a truck with 1 million miles run on synthetic with extended change intervals. And, that will be one expensive million miles.