Has anyone used Mobil 1 SHC 75/90w gear oil, if so with what results.
I`ve heard that Castrol Syntax (SMX?) 80/90w is very good but I use Mobil 1 15/50 in the engine and I like Mobil oils so I`m looking for others experience.

Gear oil is gear oil and to what difference you notice may vary. I've used the Syntrax 75/90 and had no probs. I'd assume that Mobil stuff will do the same job.

redline hi shock in mine!

it is lovely.

like a knife through butter.

comes in three weights.

I went for the heaviest but have been told to go for the middle weight next time.

i use redline 75w90NS (recomended by redline)
most people seem to use castrol syntrax, which is also very good

mikee