I bent a connecting rod on one of my pistons, so my engine had to be completely disassembled, the build up of carbon on the top of the pistons was unbelievable. I asked the mechanic why after only 18,000 miles I have such a build up, and his reply was from California fuel. The fuel has more detergents in it than any other state, and I only use Chevron Supreme with Techron.
The fuel system cleaner my dealer talked about also removed the carbon build up inside the engine. They pressurize the fuel system and run this cleaner through the engine to remove the carbon build up. They cleaned up the pistons before they put them back, but next year I will probably have this fuel service done to keep the engine clean. I will post a picture of the piston when I bring my camera to work.
03 H2 Sunset Orange Polished Magna Charger w headers & cold air intake, 37" MTRs w Weld Mountain Crushers, GPS Nav. & 2 rear LCD TVs w DVD, Extreme Tube steps
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03 H2 Sunset Orange Magna Charger w headers & cold air intake, 4\" Rancho lift, XTC Light Bars Front & Rear, 4.56 gears with Eaton Front Locker
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