Gernally speaking, will these oil provide better protection since they have more additives? And any down side of using these oil? I don't see a lot of discussion about this. Thanks!

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Those MC oils are no good for your catalytic converter.
The better question to ask is does the motor need more protection? HDEO oils are formulated to withstand the demands of commercial use in gasoline and diesel engines.We need to know what kind of engine you are talking about. To be realistic if the extra "protection" is not needed there will be no advantage in useing a HDEO or synthetic oil.Quote:
Gernally speaking, will these oil provide better protection? And any down side of using these oil? I don't see a lot of discussion about this. Thanks!![]()
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Rotella T 10w30 API CJ-4 is good from what I heard from a certain expert with insider knowledge. He described it as having near-synthetic performance.
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The better question to ask is does the motor need more protection? HDEO oils are formulated to withstand the demands of commercial use in gasoline and diesel engines.We need to know what kind of engine you are talking about. To be realistic if the extra "protection" is not needed there will be no advantage in useing a HDEO or synthetic oil.Quote:
Gernally speaking, will these oil provide better protection? And any down side of using these oil? I don't see a lot of discussion about this. Thanks!![]()
Quote:
Rotella T 10w30 API CJ-4 is good from what I heard from a certain expert with insider knowledge. He described it as having near-synthetic performance.