Installed PML diff cover with Redline oil & smoother?

[tomp]

Added the PML cover from Trail Duty and filled diff with Redline fluid and what a difference the fluid change made! I didn't expect anything from a fluid change since our diffs already have syn in it from factory. However, just changing the rear diff fluid made the thing drive noticably smoother. H2 only had about 25k on it when I did the change.

I would like to run redline in the engine as well, but it is $8 per quart. I change engine oil/filter about every 7k and have been using Mobil1 since it is cheaper at about 26 bucks for 6 qts.

Gonna do the front diff next, as I don't trust the OEM fluid very far here in Texas heat.

Will end up with Redline 75w90 in diffs, Mobil1 5w30 in engine, Mobil1 ATF in TC, and GM Dextron VI in tranny since no companies make it in Syn oil yet.

Did the PML tranny cover from TD couple of weeks ago and tranny is running about 20F cooler.