TDR Oil Tests

[Turbo Tim 1]

Roadwarrior, thanks for the info, I was getting ready to restock my supply and was going to ask them the same questions. I would like to see how the Cenpeco stacked up in the TDR oil tests.

 

[Batphreak]

Been using Mystik in the boat for awhile, it seems to do ok but I haven't run any oil tests on it. Handful of guys south of me have always liked it. I used Valvoline forever, loved it, but they quit with the distributor I use. I think it's a Citgo product, but I'm not sure of that.

Every Mystik bottle I've picked up says it's made by the evil Citgo folks.

 

[amsoilman]

I was sure by now somenone would have responded to the results of the TDR Oil tests showig amsoil as either acceptable or ho-hum based on additive packaging. So, how about the report: was it apples and oranges or not? I have been using amsoil for 25 years, but I am about to change to one of the better performing oils. I would also like to see the additive package for 15-40 diesel oil.

jdecanter

If you have been happy using the Amsoil for some 25 years, why would you want to change now? Is it because of the "testing" TDR did?



First off, I think they have the wrong info for the Amsoil (AME) HHD & Marine 15W-40 oil. They report it as a 5W-40 oil which it isn't. They also report the TBN 10. 4, when the website clearly shows it to have a TBN of 12. 1.



They also report the Viscosity as 13. 9 @ 100 C. when the actual Viscosity is 14. 4.

What gets me is the "Zinc" they reported for the Amsoil (#10) oil was 1130.



My Used oil anlysis with over 50,000 on the oil was reported as 1439!



The Phosphorous they reported was 952! Again my last used oil analysis reorted as 1158! Would driving that many miles on oil put MORE Phosphorous and Zinc in the oil? I don't think so!



If the oil analysis lab they used did the testing in accordance with the ASTM Standards, there should not be this much of a disparity!



They also did not look at other factors, such as (VI) Viscosity Index, which would tell you how much change in Viscosity occurs with temperature.



HT/HS, which looks at the shear rate at High temperatures. Mineral oil viscosity does not change much with shear rate, that is, they are Newtonian fluids. However, the viscosity of multi-grade, non-Newtonian oils usually decrease with shear rate because of the temporary alignment or breaking down of long chain hydrocarbon molecules to form shorter molecules. 2. 8 mPA. s is said to be the MINIMUM HTHS viscosity needed for normal wear, with the higher the HTHS being better for minimum wear. The Amsoil (AME) has a HT/HS of 4. 4 mPa,s.



As we all know, they did not look at the oil Base Stocks, which have a great deal to do with how well an oil performs.



I do believe had they done more than just "Oil Analysis", they could have produced a better profile of oils. However, this would have cost them thousands of Dollars.



Now I am not against the TDR for doing a comparison testing of engine oils, nor am I suggesting they have a "Hidden Agenda". I do beleive the report given does not reflect the true (AME) HDD & MARINE 15W-40 oil (#10).



Am I going to change my oil brand due to this report? Absolutely not! I have a great testimony of this oil after having used it in my vehicles for more than 27 years, and some of my vehicles went over 100,000 on a single oil change!



Wayne

 

[Gary - K7GLD]

A past test I did, running the SAME oil samples to 3 different labs, showed wide variations in the report content - some nearly criminal in variation percentages compared to the other 2. So which do we select to believe - the one that favors our favorite brand, or one of the others?



IF the Amsoil-specific results are to be ignored because some don't like the results, do we toss them ALL out as being inaccurate - or selectively accept only the ones WE agree with, especially if it shows our own choice in a favorable light compared to others?



I've seen some analysis numbers of specific oil brands - including Amsoil - that get posted because of what are felt to be exceptional numbers, yet when one surfaces that is inferior in one or more areas, Amsoil (or ANY OTHER brand!) fans want to protest, make excuses, or toss it out because they disagree with the obvious results?



As far as I'm concerned, in an open test like the one this thread is based upon, and the SAME lab is doing the testing on them all, you pretty much ACCEPT all the results - or TOSS them all out as innaccurate - no selectively accepting the ones you like - and then discarding the ones you personally disagree with!



After all, why would the lab be any more likely to make an error in analysis, than the oil company in doing it's additive blending?



Sometimes you eat the Bear - sometimes the bear eats YOU! :-laf

 

[JFaughn]

This has been interesting reading , But I get testing from multiple labs , and also just look at my oil when I check the level , and my looking & testing that says the same is what I go by [ I get about 2-3 thousand miles before the oil on the dip stick starts getting dark , 4 oil analysis tell me that at 12,000 miles my TBN is above 9 ] I'm running Rotella T 15w-40 & Fleatguard filters .
One of these days I'm going to get my Amsoil dual filter dual bypass system installed & put in the 15w-40 marine .