I have a 1936 plymouth Flathead 6 cylinder that I rebuilt from the ground up. I'm trying to determine how much oil it needs. The manuals I have state 5 Qts but doesn't specify with or without filter. I put 5 qts and it doesn't register on the dipstick I have. I don't know if the dipstick I have is the original. Can anyone give me measurements on the dipstick, measurements on full mark and measurements on the tube that fits in the engine. I don't want to run it with low oil. Thanks for any help
The 36 Plymouth engine takes 5 US quarts without the filter which absorbs about a pint. The dipstick goes directly into a hole in the block. Later engines used a tube to extend the dipstick, presumably to make it easier to reach in the later, deeper engine compartments. It sounds like your stick is too short. If your engine has the extension tube, either remove it ( it pushes in so removal is not easy ) or get the dipstick from a later motor.