rear end oil change

[yellow jacket]

What is the best way to get old oil out of rear end? I tried to siphon --no luck. Will I have to take the cover off?? I will be changing to amsoil synthetic. If I take the cover off do I need a new gasket or can I just crack it & let it bleed out?



03 2500 quad cab slt 40/20/40 pwr seats HO ETH dee 373 limited slip 2wd, jake brake, B/D short shift, pwr trlr tow pkg

 

[jlhartak]

I don't know about the new american axles but on some diffs you can take out a bottom bolt on the cover and it will drain, If not, removing the cover gives you a good look at the gears and a chance to wipe out the bottom of the case. take all the old gasket off and put a bead of good silicone gasket maker on diff and slap the cover back on. wait a while to let the silicone skin over before refilling the diff.

 

[smartineau]

When I put my Mag Hytec on I was pleasantly surprised to find a nice reusable rubber 'o' ring/seal.



steve

 

[Dean Upson]

You have to either remove or at least loosen up the cover. I would take the cover off to wipe out any debris that is in there.



Dean

 

[plongson]

Do it right...

Do it right and pull the cover all the way off. Then you can clean the insides and inspect the ring. If you just crack the cover to drain it, there is a good chance that it will seep oil and make a big mess later. Then when you dedide you have had enough you will have to go through the whole process again The best way to go is to install a Mag, get the extra gallon or so of capacity and be done with it...