I have found KROIL dissolves carbon build ups much quicker than WD-40.
KREEN is even faster than KROIL.
Kano Labs
1000 East Thompson Lane
P.O. Box 110098
Nashville, Tennessee 37222-0098
www.kanolabs.com
800-311-3374

KREEN - Internal Engine Cleaner - Improves Performance
Guaranteed to improve your engines performance. When added to
either the gas or oil, of your engine, Kreen dissolves the carbon
deposit
buildups and varnishing to Improve Compression =B7 Increase Gas Mileage
Reduce Downtime =B7 Restore Power By thoroughly cleaning the rings,
valve, and fuel injectors - Kreen gives new life back in any gas or
diesel engine.

KROIL - Loosens Frozen Metal Parts!
An industry proven penetrating oil that has no equal. Quickly loosens
rusted nuts and bolts - frees frozen shafts, pulleys, etc. Penetrates
to 1
millionth inch spaces, dissolves rust, lubricates, cleans and prevents
rust.
Displaces moisture. The oil that creeps. Used by 480 of the Fortune
500 companies!