I just go until it pours out of the hole, or you can put your finger in the fill plug and feel the fluid...
Which diff fluid.
- Thread starter HwyKng
- Start date
I just go until it pours out of the hole, or you can put your finger in the fill plug and feel the fluid...
Just wanted to make sure and buy enough. How long should it take to do the fluid exchange?
Use a turkey baster and a hose that will fit on the end of it.. not long.
the rear diff does not have a drain plug right? Do you have to pull the cover off to change fluid?
It will take almost 2 full quarts.
I run Royal Purple 75W140, and no added friction modifier.
I assume you are sucking the old stuff out.. this whole process should take less than 30 minutes.
Dude, just siphon it out with a hose.
At less than 15K my stock fluid was very thin, and was destroyed. These diffs run over 220 F just driving down the highway. I'd change the fluid every 15K or sooner with a good quality synthetic.
You will want to get some sort of transfer pump and suck it out.
Or You can drill and tap the housing for a drain plug like I did.
That sounds like a good idea. Any pics of your setup?
Thanks guys.
or swap out to an aftermarket cover like i did, has a drain and fill hole on the backside, although the drain hole is the only useful one. the fill hole is right next to the gas tank.
+2
Thanks for sharing.
Anyone know what a shops average price is to reseal rear diff cover and replace fluid?
Conventional gear oil I would use Rotella 85w-140 (I use this with my Truetrac) and change it every 5000 miles. Synthetic I would use Mobil1 or Amsoil if you still have the clutch type differential.
I wanted to use a Synthetic with my truetrac but Eaton strongly recommended against that, so I use the conventional gear oil and change it often. Its nice to have a drain on my LPW diff cover. The Rotella stuff is cheap at Walmart (3 bucks a quart) and carries some very impressive specs.
I changed my diff fluid at 100 miles, 250 miles, 500 miles and 1000 miles.(after truetrac and 4.10s) I used conventional 85w-140 valvoline because walmart was out of the Rotella and I developed a whine between 40-45 mph on decel. I put Rotella in and it stopped the whine. I was really upset because I took my time setting these gears up and the pattern was spot on. So yes I agree with mu22stang, gear oils can have different noise characteristics. Even with aluminum differential bushings I still have a very slight whine. But the Rotella was the smoothest and quietest I have used in any differential.
EDIT:
I almost forgot, Redline is also a great choice.
I wanted to use a Synthetic with my truetrac but Eaton strongly recommended against that, so I use the conventional gear oil and change it often. Its nice to have a drain on my LPW diff cover. The Rotella stuff is cheap at Walmart (3 bucks a quart) and carries some very impressive specs.
I changed my diff fluid at 100 miles, 250 miles, 500 miles and 1000 miles.(after truetrac and 4.10s) I used conventional 85w-140 valvoline because walmart was out of the Rotella and I developed a whine between 40-45 mph on decel. I put Rotella in and it stopped the whine. I was really upset because I took my time setting these gears up and the pattern was spot on. So yes I agree with mu22stang, gear oils can have different noise characteristics. Even with aluminum differential bushings I still have a very slight whine. But the Rotella was the smoothest and quietest I have used in any differential.
EDIT:
I almost forgot, Redline is also a great choice.
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