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GL 1 tranny oil
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09-21-2018, 06:50 PM
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rotorwrench
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Join Date: Jun 2010
Location: San Antonio, Texas
Posts: 16,367
Re: GL 1 tranny oil
SAE-50 100 grade aircraft engine oil works just fine. Most countries have an airport with an FBO that sells the stuff or a distributor of motor oils that does. SAE-50 motor oil is same viscosity as SAE-90 gear lube.
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