Rear diff oil change? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Chevyguy111786 · 08-04-2003, 05:11 PM

how do i change my oil on my rear diff? i've got an idea of how to do it. but i want to do it right and not screw it up. chevyguy

69mychevy · 08-04-2003, 05:25 PM

i might be wrong, but it takes me about 32.6 seconds to do a rear differential gasket change, so when i have to do the oil back there, which isn't often i just change the gasket too, am i wrong here?

**Yukon Jack** · 08-04-2003, 05:30 PM

First, see if you can get a gasket, otherwise you will have to use gasket in a tube. Leave one bolt at the top of the cover loose so when you get the rest of the bolts loose, the cover will hang rather than dropping. Have a big oil pan as the lube will come out fast. Not a lot of lube but it does gush out usually.

After draining, get gasket surface prepared and cleaned. Reinstall and then fill with at the fill plug. I found a pump you can attach to a gear lube bottle which sure makes it easy to fill the diff back up.

**COBALT** · 08-04-2003, 05:45 PM

...and fill it to the bottom of the hole (it starts to drip out, or you can feel it with your finger.

Silicone II Window/Door sealer (blue/black tube). Works like a charm.

Chevyguy111786 · 08-04-2003, 11:15 PM

That's what i thought...THANKS GUYS!

08-04-2003, 05:11 PM	#1
Chevyguy111786 Registered User Join Date: Apr 2003 Location: Garland, Texas Posts: 1,127	Rear diff oil change? how do i change my oil on my rear diff? i've got an idea of how to do it. but i want to do it right and not screw it up. chevyguy

08-04-2003, 05:25 PM	#2
69mychevy yes i did post something Join Date: Jun 2002 Posts: 244	i might be wrong, but it takes me about 32.6 seconds to do a rear differential gasket change, so when i have to do the oil back there, which isn't often i just change the gasket too, am i wrong here? __________________ you can want in one hand and s h i t in the other and see which fills first NO MATTER HOW BEAUTIFUL THE GIRL(S) IN MY AVATAR IS PLEASE READ MY POST

08-04-2003, 05:30 PM	#3
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,686	First, see if you can get a gasket, otherwise you will have to use gasket in a tube. Leave one bolt at the top of the cover loose so when you get the rest of the bolts loose, the cover will hang rather than dropping. Have a big oil pan as the lube will come out fast. Not a lot of lube but it does gush out usually. After draining, get gasket surface prepared and cleaned. Reinstall and then fill with at the fill plug. I found a pump you can attach to a gear lube bottle which sure makes it easy to fill the diff back up. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

08-04-2003, 05:45 PM	#4
COBALT Senior Member Join Date: Sep 2001 Location: Seattle, WA, USA Posts: 5,817	...and fill it to the bottom of the hole (it starts to drip out, or you can feel it with your finger. Silicone II Window/Door sealer (blue/black tube). Works like a charm. __________________ '69 3/4 ton C20 2wd-350ci/TH400 '69 3/4 ton Custom 20 2wd-350ci/4sp Manual '99 2wd 5.7 Chevy Tahoe Seattle, WA.

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08-04-2003, 11:15 PM	#5
Chevyguy111786 Registered User Join Date: Apr 2003 Location: Garland, Texas Posts: 1,127	That's what i thought...THANKS GUYS!



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