Quote:
Originally posted by edward993
Question:
If the engine has been accustomed to running dino, then develops a leak with synthetic, will switching back to dino bring you back to its previous state --i.e. small leak or dry when you had run only dino?
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According to the Mobil 1 site dino oils contain gasket and seal swelling ingredients that Mobil 1 does not. I'm not sure if other synthics do.