what gearbox oil do i use?

[FaberNZ.blaaack-S15]

i need to do an oil change for my gearbox but have no idea what oil to use.

 

[pinky15]

I use Royal Purple's synchromax high performance manual transmission fluid.

 

[S15_SAM]

You get royal purple in Japan??

 

[pinky15]

Yea they sell it on base, I dont think its sold off base though.

 

[Infidel]

Use GL4 liquids for your gearbox. There are certain additives in GL5 oils [sulphur] that eat yellow metals like your copper. brass synchros.

 

[spoonman]

redline lightweight shock proof

http://www.trademe.co.nz/motors/car-parts-accessories/oil-additives/auction-491596488.htm

 

[FaberNZ.blaaack-S15]

ok and what type e.g 80w-15 or whatever

 

[spoonman]

lightweight shock proof is 75W but it will be way better then a normal 80W, just use it and you will find out why, use their heavyweight in the diff while you are at it

 

[FaberNZ.blaaack-S15]

ok cheers so whats the difference between lightweight and heavyweight?

 

[Darren_S15]

I second smirfs blood (shockproof lightweight)

And heavyweight in the diff :thumbs:

 

[spoonman]

thinner - thicker, oil only need to be a certain thickness to suit the environment its in, so obviously a diff needs a thicker oil as the gears are getting far more friction/force then they are in the gear box, which is why LSD oil is heaver or thicker then open diff oil