? on Gear Oil

[Gator]

There is a big truck parts dealer here that sells a synthetic gear oil, the brand is supersyn, it is 5.96 a quart half price of most other brands I have checked. Supersyn also makes synthetic engine oil but this store doesn't sell it.
Last gear oil I used was regular castrol GTX 75w90 is the weight I need.

 

[salesrep]

What is your question? Your vehicle?

 

[Gator]

my bad, I was just wanting to no if anyone has used supersyn, gear oil or engine oil. It is cheap for a reason.