Originally Posted by Gokhan
Originally Posted by sjd
Once again, the Mexican 5W30 and Mexican OCI have NOTHING to do with anything other than being in my owner's manual so please quit it with that straw man. I am well aware that my manual only mentioned 5W30 for Mexico.
It is possible that the manuals in Europe and Japan do mention 0W20, but as you point out, 5W30 is "allowed" so how is it wrong to use synthetic 5W30 when the 2.0 engine is the EXACT same everywhere in the world? I understand about the potential warranty implications.
I'm looking for better protection from heat during autocross and track use and I'm looking for a low SAPS oil to help with intake valve deposits. I don't know that I can find that in a 0W20. If you have scientific reasoning behind why I should run 0W20 over a 5W30 I'd like to hear it.
I have never said that you should use 0W-20 or you can't use 5w30.
You were saying that Mazda recommended 5w30 everywhere else in the world, and I corrected that as (1) the synthetic ILSAC GF-5 0W-20 being the "recommended" grade everywhere else in the world and (2) synthetic ACEA A5/B5 5w30 being an "alternative" grade everywhere else in the world. For more details see the pages from the global owner's manual I posted earlier that gives customized oil recommendations for every country in the world, according to oil and spec availability in different countries.
As a general rule, you can always safely go somewhat higher in viscosity than the recommended, and this may beneficial for high-speed driving or extreme loads as Toyota puts it in every owner's manual.
For track use, a GM dexos1 5w30 oil or even an ACEA C3 0W-30/5w30 and/or VW 504.00/Porsche C30 oil, which is even thicker, is probably a better choice. For regular driving I would use a 0W-20 because of its higher base-oil quality, lower VII content, and higher fuel efficiency than a 5w30's. Unlike a 5w30 you need the best base stocks to make a 0W-20. For example ACEA 0W-20 oils (C5 and C6 categories) have the strictest specs among all ACEA oils. Therefore, for normal driving 0W-20 should be the best, but for aggressive driving a thicker oil may be better.
w20 even in very hot climate?
for dd driving
Originally Posted by sjd
Once again, the Mexican 5W30 and Mexican OCI have NOTHING to do with anything other than being in my owner's manual so please quit it with that straw man. I am well aware that my manual only mentioned 5W30 for Mexico.
It is possible that the manuals in Europe and Japan do mention 0W20, but as you point out, 5W30 is "allowed" so how is it wrong to use synthetic 5W30 when the 2.0 engine is the EXACT same everywhere in the world? I understand about the potential warranty implications.
I'm looking for better protection from heat during autocross and track use and I'm looking for a low SAPS oil to help with intake valve deposits. I don't know that I can find that in a 0W20. If you have scientific reasoning behind why I should run 0W20 over a 5W30 I'd like to hear it.
I have never said that you should use 0W-20 or you can't use 5w30.
You were saying that Mazda recommended 5w30 everywhere else in the world, and I corrected that as (1) the synthetic ILSAC GF-5 0W-20 being the "recommended" grade everywhere else in the world and (2) synthetic ACEA A5/B5 5w30 being an "alternative" grade everywhere else in the world. For more details see the pages from the global owner's manual I posted earlier that gives customized oil recommendations for every country in the world, according to oil and spec availability in different countries.
As a general rule, you can always safely go somewhat higher in viscosity than the recommended, and this may beneficial for high-speed driving or extreme loads as Toyota puts it in every owner's manual.
For track use, a GM dexos1 5w30 oil or even an ACEA C3 0W-30/5w30 and/or VW 504.00/Porsche C30 oil, which is even thicker, is probably a better choice. For regular driving I would use a 0W-20 because of its higher base-oil quality, lower VII content, and higher fuel efficiency than a 5w30's. Unlike a 5w30 you need the best base stocks to make a 0W-20. For example ACEA 0W-20 oils (C5 and C6 categories) have the strictest specs among all ACEA oils. Therefore, for normal driving 0W-20 should be the best, but for aggressive driving a thicker oil may be better.
w20 even in very hot climate?
for dd driving
