David, If I'm not mistaken resilone is a good top end cleaner and it's also good for cleaning out the oil paths. Add to the gas in small amounts as it will cause the engine to smoke as it burns. Top end cleaner was a blend of oils for cleaning off the intake valves as the fuel was going thru them. Then what wasn't burned would clean the exhaust valves. Grinding action. John www.specialtauto.com -----Original Message----- From: David Teitelbaum [mailto:jtrealty@xxxx] Sent: Saturday, January 03, 2004 8:54 AM To: dmcnews@xxxxxxxxxxxxxxx Subject: [DML] Re: carbon buildup > It is called "Engine Top End Cleaner". I don't remember who makes it. > It seems since the introduction of catalytic converters it is hard to > find this anymore. I am guessing but it probably wasn't any good for > the converters so it is no longer available. You might find some old > stock if you look hard enough. If you have always used modern gasoline > then it isn't much of a concern anymore. On all the motors I have > taken apart they don't carbon up like they used to with the older gas. > Unless the rings are shot and you are burning large quantities of oil > you shouldn't need to do it. I DO suggest you have the fuel injectors > cleaned. A dirty injector with a bad spray pattern will affect > performance. You can't do it with a can of stuff in the fuel tank. The > injectors MUST come off and be done in a tester. You can also pull the > spark plugs. They can tell you a lot about how the motor is inside and > how it is running. If they are all caked up with carbon then you know > you have problems. Generally they come out nice and tan except for > wear on the electodes. Always cheaper to replace but they too can be > cleaned and regapped if not too worn or cracked. > David Teitelbaum > vin 10757