Quote Originally Posted by wishniwasfishn View Post
I have a 225hp Mercury Optimax, and use the DFI Oil, do you think it would be ok to use the Mercury Premium instead? BPS has a heck of a price on the oil during their spring sale, and was curious if it would be ok. Thanks
I have the same motor, (06), and after being told I could use either by two mercury dealerships, I called Mercury and they said it would not effect the warranty or the performance of the engine. I have had trouble finding the opti oil at times and they said it would be ok but use up your oil tank of the opti and then use the premium and don't switch back.