GM Top Engine Cleaner

[John Lokay]

Is anyone familiar with a the above carbon cleaner product that I believe is still available from GM? I undertstand in the "60's is was sold in quart cans by Delco under the name, XX66 Carbon X. Does it work and how does one use it?

[Clem Z.]

Re: GM Top Engine Cleaner

they sell 2 types aerosol,part# 1052626 and liquid,part# 1050002. the instruction are on the container

[Joe L.]

Re: GM Top Engine Cleaner

John-----

I'm very familiar with it. I always found that it worked very well. I prefer the spray can version as clem described. Also, as clem mentioned the directions for use are on the container and vary by which type you use.

The product contains a chemical called "butyl cellosolve" as its main, active ingredient. It will help remove intake manifold, cylinder head, and combustion chamber deposits. I consider it the most effective product on the market for this purpose. It's also "tried-and-true"; it's been around for, at least, 40 years.

Although it might be just fine, I would not use it for a fuel injected, modern vehicle.

[Clem Z.]

Re: GM Top Engine Cleaner

it can be used on modern FI engines,they put it in thru the PVC suction line.

[Dale S.]

Re: GM Top Engine Cleaner

My friend George Brazil, always added a can to every tune up he did at Galles- Groesbeeck Chevrolet(I bought my new 67 C-2 there). It never showed on the ticket. He called it his insurance for "little old ladies" who putted around.