Full synthetic to High mileage?
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Senior Member
Joined: Dec 2005
Posts: 326
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From: Waynesville, NC
Full synthetic to High mileage?
I am currently lokking at switching oil from castrol syntec full synthetic to valvoline max life due to higher mileage. I have always been told once switching to full sythetic you should never switch back so is this true?
Thanks
Dave
Thanks
Dave
Senior Member
Joined: Dec 2006
Posts: 43,531
Likes: 817
From: Joplin MO
Why do you want to switch? If it ain't broke, don't fix it! I'll ALWAYS use a full synthetic unless it's burning or leaking excessive amounts, regardless of mileage. If it's burning or leaking, I'll either fix it, get rid of it, or treat it like a beater.
Untrue.
I have always been told once switching to full sythetic you should never switch back so is this true?