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Dr Nitro -> RE: Magnum fuel? (4/10/2005 4:07:05 PM)
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I never cared for Magnum, price is cheap but you get what what you pay for. As for oil, he has the only fuel I have ever seen that when an ounce or two is burned in a tuna can, all the methanol and nitro burn off in the expected manner and then the flame turns yellow and the oil starts burning off untill it is all gone and a squeeky clean (dry, no oil) tuna can is all that remains. With the other brands I have done the same thing with, a lot of oil remains. The fire goes out when the methanol and nitro burn off, leaving the oil.
Is this a bad thing, the oil burning off? probably not too bad when you never have a uncontrolled lean run (like a heli crash at wide open, or a muffler pressure line coming off, etc...) , but when these things happen and the oil is actually part of the combustion, what kind of protection is there in your piston and sleeve? NONE.
Some guys around here still run Magnum because they like the price, these guys are the only ones having longevity problems in heli's, in 4-strokes, in about everything.
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