CarbonSteel
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Originally Posted by Jimmy_Russells
A lot of turbocharged engines do spec 20 weight. I'm not sure what that has to do with the Pentastar however which is an extremely easy engine on oil.
Irrelevant for the Pentastar, totally relevant to the fact that most if not all xW-20 is NOT required to meet the TEOST 33C test standard which establishes oxidation and deposit-forming tendencies of engine oils, especially in the high temperature turbocharger area which most if not all xW-30 oils ARE required to meet. The statement was that "These new oils are outstanding and some of them hold up to higher heat than their 5w30 counterparts, such as M1 AP 0w20." and I am asking how that is possible given the test requirements of xW-30 versus that of xW-20 and what data point(s) were available to support that assertion.
A lot of turbocharged engines do spec 20 weight. I'm not sure what that has to do with the Pentastar however which is an extremely easy engine on oil.
Irrelevant for the Pentastar, totally relevant to the fact that most if not all xW-20 is NOT required to meet the TEOST 33C test standard which establishes oxidation and deposit-forming tendencies of engine oils, especially in the high temperature turbocharger area which most if not all xW-30 oils ARE required to meet. The statement was that "These new oils are outstanding and some of them hold up to higher heat than their 5w30 counterparts, such as M1 AP 0w20." and I am asking how that is possible given the test requirements of xW-30 versus that of xW-20 and what data point(s) were available to support that assertion.