Your engine starts out clean, but over time varnish, sludge and carbon deposits form. These deposits can degrade engine performance. "PrepUp" cleans the oil sludge buildup inside your engine that robs your engine of its power. Unlike traditional engine flushes, it is kerosene and solvent free, so it won't harm valves or seals. PrepUp has conditioners that neutralize corrosive acids while cleaning. When used as directed, PrepUp keeps engines free of deposits and boosts oil detergency.

$24.99