Most karting oils are PAG based compressor oils which are hygroscopic (in other words - they draw moisture.) They were intended to be used in a closed environment.
Few oils used in karting are PAO based. PAO based oils will not draw moisture out of the air -- that's why they're used in an open environment, lawn mower, tillers, cars and trucks.
The two base stocks WILL NOT mix and will result in catastrophic damage if not properly flushed out.
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Thanks and God bless,
Brian Carlson
Carlson Racing Engines
Vector Cut
z
www.CarlsonMotorsports.com
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32 years of service to the karting industry ~ 1Cor 9:24
Linden, IN
765-339-4407
bcarlson@CarlsonMotorsports.com