Transmission and differential oil

D's31

D's31

Member
I am about to drain the transmission oil and the rear differential oil on my 1931 tudor delux how much oil do I need to purchase to replace the oil in the transmission and the differential?:confused:
Any suggestions on what kind of oil I should use?
thanks in advance
 
600W, get yourself several bottles so you always have some on hand.
600W in everything but the crankcase and fuel tank.
Fill both until it starts to come out of the fill hole.
 
140 W gear oil is all I use, works FINE! I don't waste power, churning around some CONCOCTED GOO! I like to keep things SIMPLE.
Bill W.
 
Two quarts from Bert's Model A in Denver did the trick for me. There was still some left over. Pull both plugs from the trans and rear end. Fill a spray bottle with kerosene and spray into the filler hole and watch some of the crud come out the bottom. Use a small screw driver and wiggle around the drain hole. Replace the bottom plugs and squeeze in the new 600w until it starts to overflow. Just for the heck of it I wrapped the plug threads with plumbers tape.
 
D's31 said:
I am about to drain the transmission oil and the rear differential oil on my 1931 tudor delux how much oil do I need to purchase to replace the oil in the transmission and the differential?:confused:
Any suggestions on what kind of oil I should use?
thanks in advance
Click to expand...

These two places are perhaps the easiest to know when full if the seals are in good condition, put it in until it starts to drip out from where you are filling it..
 
If you use teflon tape you should look for Yellow stuff, good for petroleum. the white isn't. In 31 the upper plug was moved off center to ease the adding of the oil.
 
I just finished doing my car a few months back, here's the scoop: Buy at least four bottles of 600 wt and make sure each bottle includes a nozzle-cap. The trans and diff. will use up the better part of two bottles. As suggested, if you are not sure of the condition of your diff. for example, definitely flush it with kerosene. I would also give it at least 48 hrs to drain. Be sure to pull all plugs for venting. You will get a real good idea of condition when you see how much and how sludgey the oil is when you pull the drain plugs. If it looks nasty - I would encourage you to rinse your gears with kerosene. Refill both to the top. I would not recommend using tape as a thread sealant. Model A's leak oil and a few good drip pans will help you keep your shop clean and car stock. Bill's 140wt is approx what my Dad ran in his cars with never a problem. Either choice you'll be fine. Have fun with your car!!
 
I had an auto parts store research 600W substitutions and came up with this combnation: 50% Lucas 80W90 and 50% Lucas oil stabilizer. I used it in my trans. and it seems to be a good weight and sticky with smooth operation. Of course this was from Lucas engineers so take it for what it is worth.

John
 
I wonder if early gear oils left residues? Many car makers specified washing out with GASOLINE. d.j's Mother, Betty, had the Owners' Manual for her '26 Studebaker, "ASTHMA" & its' wash out included R&R the trans tower!
As a side note for Tom W, "ASTHMA" had an ODD firing order, NOT the usual 1-5-3-6-2-4! I can't remember what it was. Something like that could REALLY "mess up" your head, when trying to get one FIRED UP! Its' OIL PUMP ran off the rear of the generator! It was a HUGE CAR & had only 2 wheel brakes.
Bill W.
 
Good to know,
thanks

Redbird said:
Two quarts from Bert's Model A in Denver did the trick for me. There was still some left over. Pull both plugs from the trans and rear end. Fill a spray bottle with kerosene and spray into the filler hole and watch some of the crud come out the bottom. Use a small screw driver and wiggle around the drain hole. Replace the bottom plugs and squeeze in the new 600w until it starts to overflow. Just for the heck of it I wrapped the plug threads with plumbers tape.
Click to expand...
 
Thank you for the info

1930marie said:
I just finished doing my car a few months back, here's the scoop: Buy at least four bottles of 600 wt and make sure each bottle includes a nozzle-cap. The trans and diff. will use up the better part of two bottles. As suggested, if you are not sure of the condition of your diff. for example, definitely flush it with kerosene. I would also give it at least 48 hrs to drain. Be sure to pull all plugs for venting. You will get a real good idea of condition when you see how much and how sludgey the oil is when you pull the drain plugs. If it looks nasty - I would encourage you to rinse your gears with kerosene. Refill both to the top. I would not recommend using tape as a thread sealant. Model A's leak oil and a few good drip pans will help you keep your shop clean and car stock. Bill's 140wt is approx what my Dad ran in his cars with never a problem. Either choice you'll be fine. Have fun with your car!!
Click to expand...
 
Thank you for the information. Great advise

1930marie said:
I just finished doing my car a few months back, here's the scoop: Buy at least four bottles of 600 wt and make sure each bottle includes a nozzle-cap. The trans and diff. will use up the better part of two bottles. As suggested, if you are not sure of the condition of your diff. for example, definitely flush it with kerosene. I would also give it at least 48 hrs to drain. Be sure to pull all plugs for venting. You will get a real good idea of condition when you see how much and how sludgey the oil is when you pull the drain plugs. If it looks nasty - I would encourage you to rinse your gears with kerosene. Refill both to the top. I would not recommend using tape as a thread sealant. Model A's leak oil and a few good drip pans will help you keep your shop clean and car stock. Bill's 140wt is approx what my Dad ran in his cars with never a problem. Either choice you'll be fine. Have fun with your car!!
Click to expand...
 
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