You could read the testing protocols if you can find them.How does one knows which ceritifications, licenses or approvals is consider better than the other? Example: MB vs VW vs Porsche?
Thank you. The question is what source(s) are you guys using to determine the testing protocols?You could read the testing protocols if you can find them.
I've posted the A40 protocol on here before, it is pretty impressive, you can find it using the search function.
It varies depending on which one you are looking for. The Afton Lube Spec Handbook is a good place to start.Thank you. The question is what source(s) are you guys using to determine the testing protocols?
Yes, not really designed to compare different specs to each other (and states as much) from different OEM's, but it does show the focus that each manufacturer puts into each area, so that's useful.Lubrizol - Relative Performance Tool
Relative Performance Tools
Relative Performance Tool for Passenger Cars and Heavy Duty Vehicles: Comparisons of specifications.360.lubrizol.com
More about relative performance within the same industry spec, but still interesting to look at.
What do you mean by "better"? Each spec is better than the others for its intended application. And comparing spec-to-spec is often difficult because each one will use tests that do not appear in the others so there's no chance to compare performance across a consistent testing programme.How does one knows which ceritifications, licenses or approvals is consider better than the other? And what do each tests for? Example: MB vs VW vs Porsche? Is there a source you guys use to compare?
Weasley, your a man who knows a lot. Talking specs, how close is a new API SP & ILSAC GF-6 oil to a Dexos1-Gen2 oil? Assuming the same viscosity grade.What do you mean by "better"? Each spec is better than the others for its intended application. And comparing spec-to-spec is often difficult because each one will use tests that do not appear in the others so there's no chance to compare performance across a consistent testing programme.
It's a tricky one to compare - the dexos specs use a mix of API-type and ACEA-type engine tests, as well as a fair few GM-specific tests. For the engine tests that are common to API/ILSAC and dexos1g2, the dexos spec is slightly tougher in the Sequence VG (sludge and varnish) and matches SP for fuel economy (ILSAC demands better FE). All other common tests are equal in demands.Weasley, your a man who knows a lot. Talking specs, how close is a new API SP & ILSAC GF-6 oil to a Dexos1-Gen2 oil? Assuming the same viscosity grade.
Thanks for any insight you can give.
Overkill and SR5 already gave me directions on my question. I appreciate them for that. This thread may be closed.What do you mean by "better"? Each spec is better than the others for its intended application. And comparing spec-to-spec is often difficult because each one will use tests that do not appear in the others so there's no chance to compare performance across a consistent testing programme.
Thank you for that, good to hear the view from somebody who knows.It's a tricky one to compare - the dexos specs use a mix of API-type and ACEA-type engine tests, as well as a fair few GM-specific tests. For the engine tests that are common to API/ILSAC and dexos1g2, the dexos spec is slightly tougher in the Sequence VG (sludge and varnish) and matches SP for fuel economy (ILSAC demands better FE). All other common tests are equal in demands.