[quote author=scrptdr link=board=20;threadid=19803;start=60#msg213735 date=1069723636]
Did my homework on this too, called AA and their guy said they ran all their tests with Texaco Synstar 75W-90, and that's what he'd recommend. Only caveat about other synth oils was they might not interface as well with seal - he wouldn't venture an opinion. Filled mine to 1/4" below, like AA said. Lots of misinformation from DC - my dealer went so far as to suggest if I didn't use his 75-140 I'd be voiding warranty... I told him what AA said and he said "well then let AA buy you a new rear end when you blow yours out." Gave his name to AA and told them to straighten him out. It feels really different than when it came from the factory - a lot more bite to the lsd in turns. Anyone else notice this?
[/quote]Welcome aboard scrptdr; misinformation at the dealer? Runs Rampant. Before your dealer voids the warranty, invite him to RTFM (that's "read the FULL manual" for the mods) that DC provides with the trucks. Its says Mopar Synthetic Lubricant 75W-90.

 

I asked Dodge Dealer parts dept about the diffs last friday. I was told that there were no differential gaskets on my '99, front or rear.
TRUE OR FALSE??????????

CR

 

CR, I believe the answer is true for your truck. You need the goop when using the stock diff cover.

3rd gen's with an AA has a gasket.

 

Hmmm....I'm not a real big goop only fan. Where would ba a good place to start looking for an after market cover with a gasket?

CR

 

Look at the Mag Hytec's. Thats where I'd spend my money at. Geno's sells them too.

 

It just ocurred to me that the owners manual disagrees with the AA information that Lightman got from the TDR:

9.25 Front: 1/4" +/- 1/4" (Total of 1/2" below fill hole)
11.5 Rear: 1/2" +/- 1/4" (Total of 3/4" below Fall hole)

But my owners manual says 1/4 below +/- 1/4. Anyone chase this conundrum down?

 

Nope. I'm @ the hole and happy about it!

I'm willing to let dead horses lie.

BTW, don't forget that your totals are actually the min levels.

 

been at the hole for over 18,000 miles...mine is good, no noise and the LSD is working real good.

No, I did not weld it up

 

Wow......

Just read through six pages of fluid level controversy.

Did anybody see this stamped on the cover?

 

On the cover of what? My truck ain't got no stinkin' stamps...

 

That's on my rear differential cover. My truck is an 04. Maybe 03 didn't have it.

 

Hoot, Is that stamp level with the bottom of the filler plug or is it below? Thanks, Wade

 

It's a little below