my mechanic says that i can get something called resolin or reslin, i don't even know how to say it or spell it, but its supposed to loosen up those gummed up piston rings which my mechanic said can happen if you don't change the oil for a really long time. (i bought the car used a long time ago) so i was wondering where to get this stuff? if you've heard of it before? does it work? have you used it? what is the correct name/spelling? THANKS GUYS!