Hello Im thinking about switching to 100% Synthetic oil. I have a 200 EFI that runs perfect never had any issues. I have always used the regular quicksilver 2 stroke oil. I want to lessen the emmissions or smoke that comes out of the engine and have heard that 100% Synthetic oil will do that. If I do switch can the oil be mixed or will the tank have to be completely drained. I dont know if both oils will mix together. If anyone has any knowledge on this it would be great.Andy
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