Originally Posted by
KenLambert
I would put a new set of rings ,that much blow by I would think they are worn or lost tension from heat. I have engines 10 years old and never had any oil other than synthetic at 40:1 then 50:1 and none have that blow by on the pistons.
The rings look good. They moved freely in the piston groove and have no discoloration. I'm really leaning toward just pushing the engine a bit too hard too soon. I'm going to go back to 40:1 and I'm thinking about changing oil brands. I have been using Lucas semi synthetic.