Oil is mixed with the fuel in a two cycle allowing proper amount of oil into the cylinder for lubrication, which is where the gas to oil ratio becomes so important to two cycle engines. Four stoke engine have no oil in the fuel for lube, they have an internal lube system. Some engines have oil pumps, others have slinger type systems. Has the oil is moving around in the engine in lands on the cylinder walls giving them lube. The oil ring is in place to insure only a small amount of oil is left in place for proper lubrication, as the piston goes up and down.
no
I am not a professional mechanic but i think that you might have blown rings on the pistons that have oil on the spark plugs. what is probably happening is the rings are bad so, you are not getting good if any compression in the cylinders and the oil on the plugs is probably from a bad oil control ring also on the pistons and the oil is getting past the pistons onto the plugs.
The stock 350 pistons have 3 ring grooves.The BOTTOM ring groove is for the oil ring assembly.
no
oil control ring
There are compression ring and oil control ring
well it depends, if its a 2stroke then any 2stroke oil. if its a fourstroke u don't use oil. but any kind of oil over 6bucks for a little jug is good
The bottom ring in a piston with three rings is typically the oil control ring. Its purpose is to regulate the amount of oil that reaches the cylinder wall to maintain proper lubrication without excess oil consumption.
no useally just two compression rings , since there is no crankcase oil to control and since the oil is part of the fuel mix a oil control ring is not needed
The gas will be darker and have a different smell
regerarl 87 with 2stroke oil
50:1