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Just had my first oil change done at a dealership. They are recommending an oil change to be done every 5k. and add this oil additive every oil change too. a little over kill? I mentioned at those prices I will do my own oil changes. this service rep said a licensed mechanic has to sign off on them to keep your warranty valid. first of all I thought synthetic oil can give you longer intervals to change oil. second a oil additive for synthetic oil? third if you keep your receipts for oil changes are valid enough for warranty. correct me if I am wrong any input? thx
Just had my first oil change done at a dealership. They are recommending an oil change to be done every 5k. and add this oil additive every oil change too. a little over kill? I mentioned at those prices I will do my own oil changes. this service rep said a licensed mechanic has to sign off on them to keep your warranty valid. first of all I thought synthetic oil can give you longer intervals to change oil. second a oil additive for synthetic oil? third if you keep your receipts for oil changes are valid enough for warranty. correct me if I am wrong any input? thx