Changing tranny and diffy this weekend
Thread Starter
Melting Slicks
Joined: Aug 2014
Posts: 2,470
Likes: 460
From: East Windsor NJ
Changing tranny and diffy this weekend
These videos were helpful. Also got notes from the forum on recommended fluids to use.
Question - is it essential that the car be level when this is being done - or can I just lift the rear? Actually - I'll be doing the engine oil as well - if I have enough jackstands it will in fact be level....
Question - is it essential that the car be level when this is being done - or can I just lift the rear? Actually - I'll be doing the engine oil as well - if I have enough jackstands it will in fact be level....
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Best of luck with the job - it should keep you busy.
Melting Slicks
Joined: Jun 2008
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The guy who did the video made a huge mistake which can cause others to have a big headache..! For the diff fluid, you ALWAYS open the fill plug first, THEN, you open the drain plug, not the way he did, the other way around. Why? Because if you do it the way this guy did and drained your diff fluid and then you try to open the fill plug and it is stuck and you can't open it or damage it, you are screwed because now you can't put fluid back into the diff and you car is nonoperational.
Last edited by Studying4boards; Oct 23, 2015 at 11:38 AM.
Thread Starter
Melting Slicks
Joined: Aug 2014
Posts: 2,470
Likes: 460
From: East Windsor NJ
The guy who did the video made a huge mistake which can cause others to have a big headache..! For the diff fluid, you ALWAYS open the fill plug first, THEN, you open the drain plug, not the way he did, the other way around. Why? Because if you do it the way this guy did and drained your diff fluid and then you try to open the fill plug and it is stuck and you can't open it or damage it, you are screwed because now you can't put fluid back into the diff and you car is nonoperational.
Of course no one around here stocks Amsoil or Red Line - I wound up with Royal Purple Max ATF - and since I had already purchased GM diffy additive I got the Valvoline synthetic which does not have the additive in it. This is like $200 in fluids - engine, trans, and diffy!
Burning Brakes
Joined: Jul 2011
Posts: 1,097
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From: Fredericksburg Virginia
Thread Starter
Melting Slicks
Joined: Aug 2014
Posts: 2,470
Likes: 460
From: East Windsor NJ
It went OK - got it up level on jack stands and was done in 3h (diffy, trans, and engine oil). Getting the pump hose up into the tranny fill was a little tricky - on my back with the quart jug on my chest - but overall not bad. Didn't have a chance to road test it when I was done - curious to see if the Royal Purple makes a difference (for what they charge you the car should shift itself)! But I guess that wouldn't be any fun...
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Melting Slicks
Joined: Aug 2009
Posts: 2,785
Likes: 8
From: Sacramento California
Next time you change your oil and it stops draining.... go ahead and jack the rear up higher than the front. Watch how much more old oil drains out!
