My 2 stroke 200 merc efi seems to be smoking a little more than normal. I have tried putting marvels into the gas and it doesn’t seem to help. I was thinking it might be the vro pump and I was wondering if i could put some marvels into the oil to clean the pump out. I know it is ok if you premix it, however, i am hesitant to put it directly into the oil and reservoir. is this ok? Thanks

Marvel Mystery Oil will readily mix into the oil, so there is no need to premix it.  Let us know if this solves the smoking problem.