Quote:
Originally Posted by rick35
Is there any reason why you should use 93 octane in a boat? We have to use it in our car because it's a turbo. My boat needs at least 87 octane and it runs fine with it. We trailer the boat so we fill up on the way. And lately we fill up 5 gallon cans. I always add marine Stabil. We couldn't get gas at Goodhue twice last year and that and the price made lugging gas a better option.
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Turbos require top-tier gas to prevent carbon buildup. Premium to prevent knocking although modern ECUs retard timing when they notice knocking. You can get away with it if you don't kick in the boost. VAG 2.0 liters put out an amazing 200+ HP with excellent gas mileage!
As for premium in boat motors, mechanics say it is unnecessary as the new ECUs prevent knocking. If you have older carb motors like me, dieseling can be prevented by adjusting the carb. LLM has an experienced mechanic who can adjust carbs. I have great luck with an '88 454 Magnum with 1200 hours on the clock! LLM adds Stabil to their gas and uses top-tier additives.
My marine and automotive mechanic said it would not be a bad idea to use Seafaom treatment once a year, although it is not necessary with top-tier gas.
The Haffner station in Gilford on Route 11 sells just about any kind of gas you can think of including kerosene and nonethanol. They are not top-tier so you may want to add top-tier additive. Before speed limits, avionic gas was available at Laconia Airport.