one of my old shop teachers told everyone in the class that his brother had bought a Chevy S10. he got him to use kerosene to clean out the engine......and then mysteriously it thew a rod a hundred miles later. the shop teacher claimed that is was just because his brother bought a high mileage piece of crap. but if you think about it, carbon/grime can only build up in open spaces, and fill voids (conform to the area around it). In some cases, you get rid of that build-up and you create excessive tolerances.
Last edited by bh1992; 11-27-2012 at 12:06 AM.