I have a 2006 SR5 with 60,000 miles on it. I do all my own oil changes. but this time i went to advanced auto and got 5-20 synthetic instead of 5-30 which is what the manual calls for. Is this going to hurt my engine. They looked it up on their computer and it said my vehicle needed the 5-20. but when i looked it up in my owners manual it said 5-30. confused please help????:wtf:
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