pennzoil HP gear oil, says not to use modifier

[rockyracoon]

I bought 2 qts of some pennzoil HP 85w90 at wall mart, it was on sale for 3 bucks each.I noticed on the label it says limited slip additive fluid is not needed nor is it recommended as it allready has those properties in the formulation.

 

[8950HO]

Just throw it in,nothing to add.Just like the Mobil 1 I use.

 

[aleborjas]

i have royal purple and i put the friction modifier

 

[HISSIN50]

If the clutches chatter, you can always add it later.