I have a Kawasaki Jet Ski that uses 2 cycle oil. Kawasaki "highly recommends" using their own brand of oil called KawaChem which is TC-W3 certified. I even brought it in for service several times and they always ask if I am using the Kawasaki oil.
The Kawasaki oil costs about $30 per gallon. Walmart sells their “house brand” which is also TC-W3 certified for $11. My question is, “Am I a fool for paying almost TRIPLE the price for the name brand oil?” I am no longer under warranty so that is not an issue, however, I don’t want to blow up the engine, either.