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Whats easiest/fastest way to fill the rear diff?


JackLikesTrucks

Well-Known Member
Joined
Mar 25, 2008
Messages
93
City
Akron, Ohio
Vehicle Year
2002
Transmission
Manual
Lets face it. There's no real room to up-end a typical 90 weight quart contailer with that little spout to go sideways into the fill hole.

Whats the fastest/easiest way to get that oil in there? I'm getting tired of the hour-long squeezing.

Thanks!
 
get a 5 gallon bucket with a hand pump top of gear fluid, simple then, just pump the lever
 
I just put a hose on the bottle but the easy way is to take it to an oil change place and let em pump it in...lol
 
i pull the abs sensor an fill that way.. you can easily get one of those spout bottles in there. i just fill that bottle up a few times an iam good to go.
 
i use one of these for transmissions and transfer cases. it works with gear oil too, but is a little slower. you can get them at walmart for like $5-8

W-Mercruiser-lower-unit-oil-pump.jpg
 
Suction gun, about $9 at AutoZone. Suck the lube out of the bottle and squirt it into the diff. A piece of cardboard on the ground is a good idea. Also you can use the suction gun for other things like power steering fluid or filling the transfer case and manual transmission.
 
i saw on TRUCKS or some other show like that where they filled a ziplock bag and put it up in there. put the cover back on and soon as the vechile moved the bag got ate up and the fluid was there..
 
i saw on TRUCKS or some other show like that where they filled a ziplock bag and put it up in there. put the cover back on and soon as the vechile moved the bag got ate up and the fluid was there..

I've heard of that too, but it would bother me having something other than gears and oil in my diff...
 
i saw on TRUCKS or some other show like that where they filled a ziplock bag and put it up in there. put the cover back on and soon as the vechile moved the bag got ate up and the fluid was there..

how hot does the diff get? id imagine it gets hot enough to melt plastic and you'd have a plasticy sludge mixing in with the fluid and a plastic block floating around in there when it cools overnight.
 
get a foot of clear Nylon 3/8" tubing at your hardware store, about $.30 worth I'd assume, cut the tip of the bottle and put the hose on, should be able to fill it fast, but going through the sensor hole is faster...
 
I buy AMSoil synthetic for my Nissan Titan. I get an oil pump from AMSoil when I get the oil. While the Titan gets the good stuff the Ranger gets the cheap differential fluid. The AMSoil pump comes with a flexible tube that can go on either end of the pump. I cram the tube into the differential through the fill hole to suck out the fluid and then put it on the other end of the pump to put new fluid back it. It's time consuming but it works with minimal mess.
 
i saw on TRUCKS or some other show like that where they filled a ziplock bag and put it up in there. put the cover back on and soon as the vechile moved the bag got ate up and the fluid was there..

ya that was on trucks but they also said that is a trail only repair for when you crack your cover fix it and dont have a pump, they also went on to say that you should drain everything out when you get back
 
i pull the abs sensor an fill that way.. you can easily get one of those spout bottles in there. i just fill that bottle up a few times an iam good to go.

That's my old method, pull the RABS sensor and you can get the bottle vertical.

But my diff now has a fill plug on it's rear cover.


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