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Q&A: How often does synthetic oil need changed?

Question by Ang: How often does synthetic oil need changed?
I got a cadillac and just found out i have to pay alot more for “full synthetic oil” and my dad thinks with that, you don’t have to get an oil change as often as normal cars, which i think was 3k miles… How often is it in caddys?? THANKS!

Best answer:

Answer by Boron
I never change my oil — I just change the engine ever so often….

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