There was a recent posting about a de-carbonizing agent known as “X-66”, made by A.C. Delco. While I agree strongly with Stevebfl about the effectiveness of this stuff, serious attention should be paid to the cautionary statements as well as the directions for its use.

While it is sometimes difficult to find, (at least around here) it should be known that it is available as either a can of liquid or an aerosol spray. The directions for use vary for each, and it should be determined which is going to work best for your particular application.

I can attest that it works extraordinarily well, but is comprised of VERY nasty chemicals which you do not want to contact your skin AT ALL. People using it should be aware that it seems to be able to penetrate through latex gloves, and even the thin nitrile ones. I would strongly suggest using gloves that are intended for use with furniture refinishing products; they are usually made from a very thick nitrile rubber. Also wear a long sleeve shirt. Eye protection is important. If you are using the aerosol type, a respirator isn’t a bad idea either (for those that are truly paranoid).

A note of caution: Unless you really want to piss of your neighbors, check the direction of the wind when you intend to use it. When you run your engine after it’s use, (if your engine is very dirty) it will produce a huge cloud of noxious, dense smoke that the guys at the Pentagon would be envious of .