A couple tips on filling aluminum differentials.
I just finished up servicing a couple differentials and thought I would share a couple things I have learned about filling the aluminum ones over the years.
1. I have started making a bung to weld into the rear cover just like cast iron rears had. I weld it into the cover at the correct level and then treat it just like the older ones. Aaron at Xtreme Motorworks makes one that also has a drain hole, but since the bungs are on the outside of the plate, it doesn't work for the supers with a factory style 3 point.
2. For rear ends that I have not done that mod to or if I just need to add a little, I use a large syringe and hose loaded with Hy-Tran. I can just stick the hose down the tube into the housing and squirt the oil in without the rear end burping up oil. This syringe will hold about 6oz. and I buy them for a couple bucks each at the local pharmacy.
Hope this helps reduce some headaches.
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2 Originals, 100, 105, 125, 1450, 1200, 2 IH 982's, 1211, 1872, 2072, 2-1864's, 1782, a few 42" front blades, 2 Haban 54" blades, Haban sickle mower, BB36, QA-36A, 42" IH rear blade, 42" IH landscape rake, #1 tiller, #40 box blade, 59M shredder, #2 cart, International 3312 push mower, International 250 power washer, 1952 IH refridgerator, 1971 IH 1210 3/4T 4x4 truck
  
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