1934 Ford

I have recently inherited a 1934 Ford from my dad who recently passed. The car is a lot of fun to drive and gets a ton of attention but I'm running low on gas and am concerned about putting the wrong thing in the tank.

I've been reading up on what other people think and it seems like some say it's no problem to put in unleaded and others say it's dangerous.

The vehicle is not stock meaning, it has been upgraded with anti-lock brakes and I believe an automatic transmission. It has a stick but the stick only has P D R 1 2 so I'm assuming the fuel system has been modernized too but I have no idea how to validate my theory.

Anyone know how I can validate the proper fuel so I don't damage the vehicle?

Thanks!

What engine, most important info is missing?

What "other people" think is of no consequence. What YOU KNOW is all that matters. Something you will KNOW after you verify it for yourself, when you can make a decision, is that back in about 1898, unleaded gasoline was all there was. Tetraethyl lead additives didn't even appear in fuels until the mid-1920s. Not all gasoline even HAD lead additives. well into the 1940s.

I recently recovered a stash of antique tractors, designed to run on gasoline and/or kerosene. Every one of them was operated on modern, unleaded, ethanol-blended fuel. Of course, I added about 2% 2-cycle oil to the fuel for valve and upper cylinder lubrication, and had no problems whatsoever. I tend to do that with all my older engines.

http://www.wwdsltd.com/files/20220507DeereHerd.jpg


What you really need to be concerned with is whether the catalytic converter on the '34 is still intact. Finding replacements for those is almost impossible, but you can ask "other people" about that and get varying opinions as well.