Yeah, I don't like the smell of gear oil.
I think it is the high sulfer content in it that makes it stink.
The synthetic stinks less and
redline stinks the least.
The BG additive stinks like old gear oil. (You know, the slightly rancid smell you get when you take out the carrier cap bolts or stock ring gear bolts?)
I was, like you, feeling pretty weak hefting the diff back up there again. I swear the V6 diffs weigh 20 pounds more than the 4cyl diffs! And you have to be so carful of that copper arb line on the side that seems to be magnetically attracted to the axle housing. (Mine has some dings to be sure, but it doesn't leak (yet).).