Today i turned the key to start the engine and i herd the starter grind.the starter was turning but the engine was'nt turning over.I can turn the engine by turning the crank shaft with a socket wrench,but could'nt even do that.2 weeks ago i put in some restore in to the oil and a teaspoon into each sparkplug hole.restore did prevent the oil from geting to my spark plugs which told me that it fixed the bad piston rings since i'm sure that they need replaced since oil was on the sparkplug.I don't know if i should take the head off,drain the oil and put in fresh without the snake oil.i need some advice please.if taking off the head again will help i'll do anything.:cry: