Are there any fuel additives that you folks would recommend for cleaning carbon deposits and the like in the T engine? I've shined the outside, like to shine the inside. Thanks all...Bob
A word of warning. I have a Sunbeam Alpine, made in 1967 when gas in England had lead in it. I drove it on leaded gas until about 2 years ago when the cost got prohibitive (you can still get it in just a few places but it's about $12/gal whereas 'ordinary' unleaded is 'only' $8!).
Instead, I have been using Castrol Valvemaster additive for two years and, to cut a long story short, have now found that the paint from the inside of the tanks has all flaked off. You can guess the rest.
The moral of this tale is - be careful what chemicals you put inside a painted tank.
An old mechanics trick was to bring the piston to TDC on the compression stroke, drop a little kerosene in through the open spark plug hole and then stick a small acetylene torch tip in with just the oxygen turned on. By pointing the tip in different directions around the cylinder as the kero burned, the carbon deposits would completely burn off.
Don't know how practical this is
Bob, pull the head and clean the carbon off, if it's a concern. The head gasket is inexpensive and there is minimal time involved.
Techron, sold by Chevron, is the only additive I know of that has been PROVEN by outside labs and Consumer Reports to actually reduce carbon deposits on valve stems.