Change Oil from Synthetic back to Dino
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Joined: Apr 2008
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From: CoCo County, CA
Change Oil from Synthetic back to Dino
I have heard that once you start using 100% syn oil that you can not go back to regular oil. I've read some (not all) the threads re: using syn. At my infant stage, I'm not getting into the discussion of which is better - syn vs. dino 
If I use 100% syn at the next oil change, then later decide to go back to regular dino, are there any issues with that? Has anyone done that?
thanks.
If I use 100% syn at the next oil change, then later decide to go back to regular dino, are there any issues with that? Has anyone done that?
thanks.
Registered User
Joined: Jun 2007
Posts: 1,601
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From: Hemet, CA
No issues at all whatsoever. Syn oil will loosen up sludge in the engine so if you switched BACK to Synthetic I might run a shorter interval the first time before changing it. I have gone back and forth with no problems and great UOA's.
Registered User
Joined: Jun 2006
Posts: 2,423
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From: Forest Grove, Oregon
Very Good Advice about doing a short OCI after using regular and going back to group 4 or 5 synthetic oil.
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