I think that once a year, you should drain the gear lube and replace it with as thick of lube as you can find possible. A lot of the newer cars recommend using automatic trans fluid in the gearboxes. I think they want to sell you another gearbox. In the very cold months, the thick lube will be stiff at first but it will warm up soon enough after driving a couple of miles.

Mareo

Hi All,
Just a quick one for you all. I will be checking the diff & gearbox oil level tommrow. All running gear is stock and been around the world a bit.

Will it hurt if I top up both diff & G/Box with 85/140 gear oil if needed ?? Ive got this oil here and Im not sure weather I should use it or not.

I think that if both are worn it shouldent hurt and may be even better if there is normal wear , what do you guys think ??

Regards & Thanks
Andrew (amshaw )