Originally Posted by daviethebiker
Back then my Dad thought more premix (more money)was still less than an engine rebuild from lack of lubrication. My older brothers routinely ran very little premix and always had to rebuild their motors.
My nephew spent a lot of time and $$ rebuilding his CR250. He took it out and trashed it running a 50:1 mix. He took some bad advice from someone as gospel - "all you need is a 50:1 mix with this monster-power synthetic oil, and your bike will make HUGE horsepower". When I heard about it, I instantly new that 50:1 was way to "thin" for a race bike, especially the way my nephew rides. I can understand that my factory manual spec of 20:1 is for all out racing for which the bike was designed. But that would have me puking oil out the end of my silencer.