Fuelman
Posts: 1009
Joined: 12/31/2001 From: Jordan,
NY, USA Status: offline
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Planeboy, Adding 3% of castor will not hurt a thing. You may in fact be rewarded with an engine that will last longer, run more consistant and you will be satisfying the warranty which specifies 20% oil. If you were adding castor to a high castor fuel, I'd recommend against it in a four stroke. A little bit of castor in a four stroke will do wonders for ring/sleeve wear & seating, rod journal wear, and rust prevention in the bearings. 3% castor will not really be enough to gum up the ring or coke up the valves. I recommend an 18/2 syn-castor mix for fourstrokes but 17/3 is just fine. Happy flying Fuelman
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Fuelman Cooper Fuels LLC
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