I read somewhere that RCshowcase said the they tested Lawnboy oil and it burned some rings on breakin,, I have recently bought a ZDZ60 and I have been running Amsoil Dominator 50:1 since new ,is there a problem from this,,,, the motor has only about 2-3 gallons through it,, would it hurt to run pertroulem in it to speed up break in for a gallon or two or just keep on running the synthetic,,