Paging Amsoil Dual BP "Experts"

[Rockcrawler]

I've searched the threads and my head is spinning so forgive me if these topics have been beaten to death.



I don't need to be sold on the dual bypass system, I have one and like it. for those of you doing oil analysis- what filter change intervals are you finding "work' for you. I changed the one filter at 20 k on the oil, lab report was very good and now intend to change both filters at 40k on the oil. Anyone else close to these intervals with positive feedback from the lab?





I've got a few friends who could not be without a true crew cab and drive Fords. I've heard that their oil system is fussy and that the oil activated injectors will not fire correctly if the oil starts gettng "dirty". Are the dual BP systems working for these guys with changing filters and adding makeup oil? I checked their site and ran a search and as best I could determine a lot of these guys change their oil very often- could not find people going past 10K on their oil. If you've got to change the oil anyway the cost & nuisance benefit gets diminished. Anyone know of any "success stories" for the ford boys and extended oil usage?



Thanks for helping!

 

[Briar Hopper]

Why not post your question on www.diesel-central.com ? It's free, all major brands of dieselheads are well-represented on there.

I discontinued use of my bypass system because of the excess turbo lag of my Hx40 causing a lot of soot buildup. I'll hook it back up as soon as I get the turbo I want, on there. With the bypass, I'll be changing oil at 15,000 miles, filters every 7500, if I'm using the truck really hard, and if my analysis numbers come back okay.

Rockcrawler, I see you're mildly BOMBED... excess soot should not be a problem for you. I'd still change the oil at around 20,000 miles, if I were you. 10,000 miles per filter. More often is even better. Only an oil analysis will tell you for sure.

As for the Ford guys, some synthetics react against the silicone used for sealing in the Navistar engine, and can cause the oil to foam, making the hydraulically-operated injectors misfire. As the engine breaks in, the silicone levels dissipate. I wouldn't run synthetics in a Navistar until after at least 50,000 miles of regular oil, and regular changes. That's my personal take on it.

 

[amsoilman]

Rockcrawler,

My recent oil analysis(1-2-2002) taken with 31,800 on my oil came back with these remarks. "Results of tests performed indicate Oil is suitable for continued use. Change Oil filter's, if not already done when sampled, top off system, and re-sample at next regular interval"

I might also add that my filters have never been changed since 105,000 miles, and that was in November of 1999. Truck had 136,800 miles at time of oil analysis.



On the subject of the Ford PS using a by-pass and extending the oil change interval. My son-in-law has a 97 model with the "Single" remote by-pass system. He now has 43,000 on the oil without draining the oil out. I won't tell you what oil he is using, as there are some here that would pound this thread into the ground! I will tell you it is a very well known synthetic engine oil of the 5W-30 SAE Grade.



Wayne

amsoilman

 

[Don M]

Wayne, you have not changed your filters in how many miles? Did I read it correct? Does it say over 100,000 miles?

If I read this correct, you are putting back into service oil that has an iron content of 130 and have not changed the oil filters in 100,000 miles?



Holy cow Wayne!



Don~

 

[amsoilman]

No Don,

I said the oil filters have not been changed since 105,000 miles. The truck had 136,800 miles at the time of oil analysis. That is only 31,800 miles on the filters, but the time the filters were changed was November of 1999. I think that's two years and a couple of months.



Wayne

amsoilman

 

[Rockcrawler]

reading boo boo

Don- It looks like Wayne said his filters were last changed at 105K with the oil and now had 31Kish miles on the oil with no filter changes in that timeframe.



Don, from what I've read (on multiple threads) it sounds as though you've got some experience that indicates that different labs or OEMS are using different specs or limits when evaluating various content in the oil and determining whether the oil should be continued in service. Which of the OEM's and labs are supporting the limits you choose to go by- can you elaborate for me?



I'm just a techie who is trying to treat his Cummins right but at the same time I don't want to invest in oil and filter changes because "It can't hurt". I'm a little careful here, I used to work with a bunch of aerospace engineers who threw money consuming overkill specs at at things claiming "goodness" but they could seldom put a number to how much stronger, better, fatigue life etc there money sucking processes would deliver.



I'm always willing to learn from those who have gone before me though- thanks

 

[Don M]

Oh, you had me wondering on that one.



Im not gonna pound Amsoil into the ground on every thread.

If Amsoil would get the cert. I would be a happy camper and keep my mouth shut.



I actually dont like the winter start up with the 15/40 dino and we dont get exactly cold here. The guys up in the cold areas like where you live really need a good cold flowing oil. My days in SE Idaho I can remember the cold start-up with dino and the time it took the oil to begin flowing good.



Further, the dino oil runs a higher overall temp than my synthetic did. About 10 degrees on average.



sorry for the confusion on filters.



Don~

 

[amsoilman]

DonM,

No problem Don, just wanted to set the story straight here!



Wayne

amsoilman

 

[Don M]

Cummins and other manufacturers have set acceptable limits on what kinda stuff and the amounts of the stuff can be in the oil.

Cummins does not reccomend extended oil drain intervals for our engines per their website and the engineers I have spoken with.

The pan capactiy is too small to try and make it work and keep the oil stuff at an acceptable limit.

Please read then link in the center of the page under 'synthetic oils'.



http://www.cummins-sp.com/new_web/tips/tip.htm



Some synthetic oils have the edge over some dino stuff. I just dont like the extended oil drain intervals in our engines.



Most diesel engine OEM's want a total of 150 ppm of iron detected in the oil. Wayne is gettin' close with the 130 ppm.



The bad thing is, guys dont like to change the oil and filter all the time and the extra price of synthetics seems to beg us to leave it in the engine to make up the cost.

This gets guys into trouble with Dodge and Cummins and can increase wear rates and risk.



Text from a Cummins engineer to me: "During use, engine lubricating oil undergoes deterioration from combustion by-products and contamination by the engine. Certain components in a lubricant aditive package will deplete with use. For this reason, regardless of the oil formulation, regular oil drain intervals are required. These intervals may vary in length, depending on engine operation, fuel quality, and lubricant quality.

Generally, shorter oil drain intervals extend the engine life through prompt replenishment of the protection qualities in the lubricant. Conversely, extending oil drain intervals beyond the useful life of the lubricant can significantly reduce engine life"



Yes, oil can be extended in service. I dont say that the programs are not good for some applications. I just dont think the oil in our application should be extended past the factory specs.



I worry that some guys are thinking that the oil they leave in the engine is still good because tests are saying it is. Testing labs use all different kinds of tests and quality control procedures. Cummins knows this and sets the drain intervals accordingly. Yes, they are somewhat conservative for todays oils in most cases.



Some oil marketers are using too many of the good things to extend the life of the oil and causing bad side-effects.

Some oil marketers are adding additives to crutch the cruddy base stocks they are able to obtain. Using things like viscosity improvers. Nearly all engine manufacturers ask us not to use oil with viscosity improvers.



Just plain ol' Rotella T, Delo, Premium Blue, etc changed in a timely manner will be just fine. There are plenty of people in this board that have exceeded 300,000 miles doing just that.

I have seen 0 engines from the TDR that have gone that distance with extended oil drains.

The recent million mile truck used Rotella T and factory filters changed when required. Two nights ago a guy was on here telling about his Rotella truck with 375,000 miles on it. The oil was changed at 5000 mile intervals and the truck still runs great and pulls hot-shot freight around the country daily.



Amsoilers... can you show me one single Dodge/Cummins with 300,000, 400,000, or dare I say 1 million miles on it?



Don~

 

[Turboman]

Tractor with 20000 hours

My dad has a JD tractor with a little over 20,000 hours on it. Since day break-in it had nothing other than Amsoil 15w-40HDD. :--) I don't have any idea how many miles that could be, but it would have to be at least the same as 500,000 miles. Oil was changed every 500 hours with filter at 250.





Don~

The Rotella you mentioned has no API cert or least I could not find it on the barrel. Rotella is good oil, I could care less what a few overeducated engineers think about it. I use it in my equipment that leaks more than it uses because it is fairly cheap at Sam's by the barrel. Not trying to start another riot here, just my dos pesos. :-{}

 

[fest3er]

Originally posted by Rockcrawler

... I changed the one filter at 20 k on the oil, lab report was very good and now intend to change both filters at 40k on the oil. Anyone else close to these intervals with positive feedback from the lab?...

I've been changing the full flow every 10K-20k miles, and the bypass at double that. My analysis results have always come back "good for continued use". I now have close to 40K miles on

the oil. I have added around 8 qts of oil in that period of time, thus keeping the additives at proper levels.



Of course, a lot of the miles have been on the highway at 75MPH. This past year or so, I have driven more around-town, so I may keep the intervals closer to the 10K size.