Been using Shell Rotella oil 30W in my 12hp. This oil has been in my #127 for 4hrs., total since my last oil change. Fired it up, cut my back lawn & after a 1/2hr., got a 219deg. reading while running.
Then I changed my oil to Amsoil synthetic small engine oil 10/30-30w. Cut the front & side, total time 35min. while running I got this for a reading.
I'll take it. I think its a fair test I did & am
NOW SOLD ON SYNTHETIC! It may be a small variance in temp., So,
"THE PROOF IS IN THE PUDDING!"
It had a carb re-build, head gasket, new coil, blah, blah
& was running ever so fine since June. With the new oil it just seemed to slightly smooth out a bit.
I'm not trying to convince ANYONE to switch over. I'm just sold on it & have read COUNTLESS re-views & am stticking to it.
Nik,