“First, G100UL tends to stain paint, hangar floors, and anything else it touches. Pilots and aircraft owners can take precautions by applying protective coatings, but G100UL doesn’t wipe away or evaporate like avgas. Inadvertent and relatively small fuel spills must be cleaned immediately and thoroughly to avoid staining. The top of the fuel caps on the Baron’s left wing have yellowed during its year of exposure to G100UL, while the fuel caps on the right wing show no noticeable change.”
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