guys at what point is a piston & sleeve classed as worn out...with the (glow plug out) i know when turning the flywheel over with your finger at TDC there should be some resistance, like a notchy feel at TDC....or is a sleeve & piston still classed as good when there is no resistance at TDC.i know this is a buggy forum and will be buying one during the year.i recently purchase a new a traxxas jato and was using 20% AT Racing premixed fuel distributed by VP Racing.i almost used a gallon of this fuel and with glow plug out the engine had very good pinch (notchy) at TDC.i then decided to make my own home brew....using fresh nitro and methanol from my hobby shop i made a litre...my mix was 650ml methanol...200ml nitro.....150ml of maxima 927.i know maxima 927 is ment for motocross bikes but with it being well known as a quality oil i thought i give it a go.after going through two tanks i took the glow plug out and the pinch had gone.[&o].ive kept using the home brew and there has been no more loss of compression...and the engine still performs excellent.though i wont be using home brew when i get my new buggy.

also on average how much fuel can you go through until you lose that pinch at TDC with (glow plug out)