I bought a new Toro (20332)self-propelled mower with the 6.75 "torque" motor. I ran the break-in oil (Brigs 30) for probably 3 hours of usage. Then I switched out to M1 0W-30.
The problem was that it would puff an embarassing cloud of smoke on start up with that 0-30 oil. So, I switched to good old cheap Wal Mart synthetic, 10W-30 and the problem went away. Do you guys think that it puffed smoke becasue the motor wasn't yet broken in, or was the oil indeed too thin? What I think is that these motors are made with loose tolerances and they need thick oil, if that makes sense.
The problem was that it would puff an embarassing cloud of smoke on start up with that 0-30 oil. So, I switched to good old cheap Wal Mart synthetic, 10W-30 and the problem went away. Do you guys think that it puffed smoke becasue the motor wasn't yet broken in, or was the oil indeed too thin? What I think is that these motors are made with loose tolerances and they need thick oil, if that makes sense.