ORIGINAL: karolh
I never intended to get involved here but just out of curiosity I visited the Royal Purple site and read for myself that their TCW 111 rated oil is recommended for use as a pre -mix oil in 2 stroke motorcycles, which I assume have AIR cooled engines.
Karol
Actually most motorcycles these days, both 2 and 4 stroke, are LIQUID cooled. Harleys and Harley clones are exceptions, but they are 4 strokes.
jess