MTFCA Forum

What kind of gas is best for a T? ethenal free, regular, hi octane, jet fuel ?

Would say any good grade of gasoline is OK in the Ford.


But if you want best all around performance, be sure to drop a few tablets of these in the tank.

I run on plain old regular. Ethanol hasn't been an issue for me. Works just fine. Any gasoline produced today is better that what they ran on when made.

What kind of gas is best? Fresh.

You have asked one of the most opinionated questions to the forum. I have attached some links so others don't have to repeat their responses if they choose to do so. But let me begin by saying that in the days of Model T gasoline was of very low octane rating by Today's standards. BUT the compression ratio of the Model T was low and some stories mention mixing kerosene with the gas even alcohol and lead additives (enough of that). Now many model T engines have been rebuilt with different pistons, cams, carburetors, cylinder heads etc and compression rations were slightly improved - so individual responses may reflect an engine set up. Bottom line inexpensive gasoline and never anything above 10% alcohol. Read on
https://mtfca.com/phpBB3/viewtopic.php? ... gas#p71075
https://mtfca.com/phpBB3/viewtopic.php? ... gas#p72909
And yes "FRESH" just like lawn & garden equipment you don't leave gas in the tank for months on end.

I use the lowest grade available which works fine for me. I use Sinclair gas (lowest price in our town) I go in and say I want Dinosaur gas for my Dinosaur car, and everyone laughs!
Important to drive the car from time to time and use up the old gas before it turns to varnish. It is the old gas which gums things up. I have recently worked on two cars for friends and we had to replace the fuel lines because the gas in the lines turned to varnish. After cleaning the carburetors they worked fine. One of the cars had been sitting for almost 20 years and the tank was gummed up. It would have cost about the same amount to have the tank boiled out than a new tank, so we replaced the tank too.
I have heard that "Stabil" poured into the tank if you are going to park for a long time is helpful, however I have not used it. Just drain the tank and carburetor if going to be parked for long periods.
Norm