I stopped in Advanced Auto yesterday evening in Columbus Ohio and bought three gallons of Quicksilver premium, $29.99 plus tax per gal. This is the first oil I have had to buy in a couple years and couldn't beleive how much it has gone up in price. Just wondering what oil you other Mercury owners use what you pay. I am afraid this stuff is going to keep going up in price so I think I will pick up another 4-5 gallon next trip up there and that should last for a 2-3 more years. I noticed Advanced had Pennzoil for about half the price of Quicksilver but I would rather pay extra and stay with what Merc recomends. Even at $29.99 it is still cheaper than an engine(just my thoughts)