Wondering if anyone would have info on the use of Opti-oil for my twin 150 optis. I own and operate a sports fishing charter operation(salmon/halibut) out of the west coast of Canada and I go through a lot of Mercury Optimax oil, which seems to be priced quite high. I've been told by some buddies that I am crazy to be purchasing this, as Mercury doesn't make the oil, they buy it and put their labels on it. I've also been told by my local Merc rep that it is in the best interest of my engines to purchase Opti-oil, which is what I would expect him to say. I usually go through two 45 gallon barrels a season.
