Amsoil SS 0w-40 now available.

[Quattro Pete]

Originally Posted By: kschachn
What does that mean though, exactly? It also says it meets dexos1 specifications, yet there is no dexos logo on the bottle. So it's not dexos certified?

A bunch of RP oils are on the official GM dexos list...
http://www.centerforqa.com/gm/dexos1-brands

 

[Quattro Pete]

Originally Posted By: kschachn
wemay noted it says "at least Royal Purple '0w-40 and 5W-40 meets and or exceeds European specs ACEA A3/B3-04 warranty requirements", does that mean like M1 0W-40 it meets them? I'm guessing it does since ExxonMobil uses the words "Mobil 1 0W-40 has the following builder approvals" for LL-01 for example. Yet for ACEA A3/B3, A3/B4, M1 0W-40 states "Mobil 1 0W-40 meets or exceeds the requirements of", pretty much like the Royal Purple claim.

I'm guessing it has to do with the fact that ACEA spec compliance relies on self-certification/testing. Another words, as long as the oil manufacturer has tested it (and presumably has the results to prove it), they can claim compliance.

 

[kschachn]

Yeah, I should have thought to check the list myself. So according to the list, the 0W-20, 5W-20 and 5W-30 are dexos1 approved, just not the others on the linked product sheet.

Originally Posted By: Quattro Pete
A bunch of RP oils are on the official GM dexos list...
http://www.centerforqa.com/gm/dexos1-brands

 

[Mephy]

Originally Posted By: Mephy
I will use it next oil change since the 40 grade is suggested for my car, but there was no signature series for this grade before.


The car goes great the compression is definitely increased.

 

[OVERKILL]

Originally Posted By: Mephy
Originally Posted By: Mephy
I will use it next oil change since the 40 grade is suggested for my car, but there was no signature series for this grade before.


The car goes great the compression is definitely increased.


I doubt you've gained compression. Did you verify this with before and after compression tests using a gauge?

 

[Mephy]

No is just a sensation, I have better acceleration on low torque.

The car call for 40 I used to use 30, which is still ok, because there was no signature series with this weight.

 

[OVERKILL]

Originally Posted By: Mephy
No is just a sensation, I have better acceleration on low torque.

The car call for 40 I used to use 30, which is still ok, because there was no signature series with this weight.


What kind of car?