Hi Penrite,

I would like to ask your recommdation for a Differental oil to be used in my application, I have a Nissan z31 300zx and have fitted a  Quaife ATB (Automatic Torque Biasing) differential. the vechile will be mostly street driven (400 HP) 

I have been told to use a Pro Gear 75W-90  GL5. 

Just thought I would check first.

Thanks

Nic

Hi Costa,

Thanks for getting back to me.

I will have to check with Quaife their online recommendations are for another oil brand being a UK based company.

so I'm not sure what effect the LSD additive will have, I did check some FAQ's on the Penrite website first. 

I have email Quaife just waiting to hear back.

Their website has the below general recommendation.

What sort of gear oil should I use?

When running a Quaife ATB Differential in a standard transaxle gearbox, we recommend you use the oil recommended by your vehicle’s manufacturer – the Quaife ATB Differential does not require any special lubricants.

When running Quaife gearbox internals and a Quaife ATB differential, we recommend FuchsTitan SYN5 75W90. For a Quaife ATB differential, running in a rear axle, we advise you use a hypoid 90 or 75W90.

For those applications that will accept a GL5 or SAE 75W90 gear oil, we recommend and sell Silkolene SYN5 75W90 gear oil. We use Silkolene in all our own Quaife racing transmissions.

Ok , thanks for that Costa 

Regards

Nic