I've been told by a knowledgeable Mercury mechanic that I should run ONLY white gas, 93 octane, in my 2 cycle Mercury motor; only AMACO, EXXON, or BP. He made convincing arguments (non-white gas has various additives that will cause problems..). Recently I was told that you should NEVER run white gas in a 2-cycle engine with equally convincing arguments (white gas has water in it and alcohol is added to dry the water which causes the mixed oil in a 2-cycle application to separate from the gas). Who is right? Here’s my setup: 1996 Mercury 225 ProMax with Bobs high performance exhaust, Sport Master Gear case, Boysen Reeds, 2.5 Carbs, dyno at 245HP, on a 10" Rapid Jack Plate. Turning a 27 DAH SRX to 7000 at 86.2 mph (gps).. It's pretty hot so I don't want to invite trouble.