1969 Three on the Tree - trans fluid and capacity?
Hi guys, I have a three on the tree in my ‘69
Can anyone tell me what trans fluid it takes and rough capacity? Thanks Also, assuming it’s original, what transmission is this? |
Re: 1969 Three on the Tree - trans fluid and capacity?
80/90 Gear oil. I'm thinking 3-1/2 pints but will have to find my manual. If it is in the truck one of those red plastic transfer pumps with the red hoses from Harbor Freight is a life saver. They are inexpensive enough to have one for each type of fluid you would pump with one and not cross contaminate.
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Re: 1969 Three on the Tree - trans fluid and capacity?
This is what I use in mine:
https://www.tractorsupply.com/tsc/pr...-2-gal-t806600 The GL-1 rating is safe bronze and copper(one or both are present in the 3 speeds) There's much discussion about this on this board and many others. But my deduction was the a GL-1 Rated 90w Gear oil is the safe choice. |
Re: 1969 Three on the Tree - trans fluid and capacity?
Apparently NAPA has 1 gallon for the price of 2 at tractor supply if that is more convenient for you.
https://www.napaonline.com/en/p/NHF65201 |
Re: 1969 Three on the Tree - trans fluid and capacity?
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I would go with a good 80W90 oil just my opinion David |
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Re: 1969 Three on the Tree - trans fluid and capacity?
Thank you for the replies everyone.
Will use the gear oil recommended above. Lastly, what transmission brand/name is this? |
Re: 1969 Three on the Tree - trans fluid and capacity?
Just like a differential. Fill it until lube runs out of the fill hole.
Most gear oil bottles have a nozzle, so unless something is in the way, you can just stick in the hole and squeeze. |
Re: 1969 Three on the Tree - trans fluid and capacity?
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https://lugnutz65chevystepside.weebl...ission-id.html |
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Based on the 7 bolt cover, and placement of bolt holes, it appears to be a Saginaw 3sp manual Is that good or bad? Lol |
Re: 1969 Three on the Tree - trans fluid and capacity?
Good trans.
Lighter duty. The Muncie was supposedly heavy duty. |
Re: 1969 Three on the Tree - trans fluid and capacity?
Just make sure the fluid is GL4. It's compatible with soft metals.
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Useless information?;) |
Re: 1969 Three on the Tree - trans fluid and capacity?
Oh, can anyone confirm the three gear ratios ?
Also, what is my factory rearend gear ratio in my 12 bolt? |
Re: 1969 Three on the Tree - trans fluid and capacity?
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B]...If originally equipped with an automatic transmission, a 3:08 differential gear set was installed. If Manual, 3.73 was standard. If not noted on the SPID Then it was one of these. |
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I’ll try to confirm it by doing the wheel rotate / driveshaft count |
Re: 1969 Three on the Tree - trans fluid and capacity?
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Factory issued info:
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Re: 1969 Three on the Tree - trans fluid and capacity?
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GL-5 80W or 90W was recommended then..
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