I believe the road draft tube for the 1940 engine had a removable cap at the top for adding oil. If you use that tube, you'll also need to install a valve cover with an oil fill cap on it from a later model engine.
Drop me a PM- - - -I might be able to help with the correct draft tube. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
That's the road draft tube not an oil filler tube. Fill the oil through the cap on the front of the valve cover.
Last edited by Otto Skorzeny; 02/04/20222:07 PM.
1950 Chevrolet 3100 (Ol' Roy) 1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1956 Cadillac Sixty Special Fleetwood (The Godfather) | 1966 Oldsmobile Toronado (The Purple Knif) | 1966 Ford Mustang (Little Red) | 1964 Ford Galaxie 500 coupe | 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
HRL is correct on that though. There ARE draft tubes that have a screw type filler cap on them. I have one. The purpose of the filler cap? Can't say.
Thinking about it though, I suppose you could fill oil through this type draft tube. Wouldn't it make a mess though? Some of the oil would go straight through, would it not?
I have one of those tubes that will be headed to the OP soon. It is correct for the truck he is working on, since his valve cover does not have a filler cap. No, oil will NOT leak out of the draft tube- - - -it's baffled to prevent that from happening. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
What Jerry is describing is exactly what I have on my '37. The valve cover has no fill cap. You add oil via the road draft tube, and no, you don't get oil leakage. Kent
