Hello Scotty, I have a 93 Celica with 3S GE engine, currently using 5w30 synthetic Mobil oil. Should I switch to 5w40 for a bit more protection and higher ZDDP levels (antiwear additive)? Thank you

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No. 1-2
alexmarjanovic98
alexmarjanovic98

Thank you

ScottyKilmer
ScottyKilmer

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I would, being that old.