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I'm working on getting my 79, 1500 midget on the road. I just did the rear brakes,Wheel cyl., axle bearings and seals. The book says that the diff uses 90w and the trans 80w. Are there modern multi weights I should use, or just stick to the book? (assuming I can find single weight oils) Thanks, George
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Diff and trans oil
- Thread starter George_H
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You can still get 90 weight gear oil from the local auto parts store. Just ask them for rear differential oil or gear oil. You probably should pick up a hand pump/grease gun/siphon to put it the fluid in as trying to fill the differential using a funnel and gravity tends to be an act of messiness with a bit of body contortion thrown in.
I'm not quite as sure about the transmission. I have a '69 Sprite with the 4-speed "ribcase" transmission and I put 20W/50 in it. I don't know if they had a different tranny in '79. The pump again is invaluable for refilling the transmission through the hole in the tunnel on the driver's side without making a huge mess.
I'm not quite as sure about the transmission. I have a '69 Sprite with the 4-speed "ribcase" transmission and I put 20W/50 in it. I don't know if they had a different tranny in '79. The pump again is invaluable for refilling the transmission through the hole in the tunnel on the driver's side without making a huge mess.
David_Doan
Jedi Warrior
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I think all the A-series sprites used 20w/50 in the tranny and the 1500's use gear oil.
aeronca65t
Great Pumpkin
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When I was racing the Spridget with the 1500 and "Marina" gearbox, I ran 75W/90 Red Line synthetic gear oil in the gearbox and diff with no issues.
When I swapped to the 1275 with ribcase gearbox I switched to 5W-30 synthetic motor oil for the trans.
When I swapped to the 1275 with ribcase gearbox I switched to 5W-30 synthetic motor oil for the trans.
G
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I'm about to go to ATF in my '79 trans.
why ATF in a manual transmission?
G
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A lot of the newer boxes use it, mine is getting groggy and I need something I bit thinner to help w/ second. It has some Lucas in it now and the colder it is, the harder it is to get into second. Once it warms up it's fine. I need the syncros to grab sooner so it needs to be thinner. With ATF it should be good from the get-go no matter the temp. it's just a measure to tie me over till I can pull it and rebuild/replace it but I still like the idea of it.