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Diff Oil Change

tricstar

By tricstar,
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tricstar Mentor

tricstar

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just changed all my fluids except the rear diff, how many kms should I be going between changing rear diff oil, standard R33 GTR sreies1 diff , car is 800+hp and sees the track once a month-ish along with some "normal" street stuff a few times a week ? if that matters?

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MrStabby Grand Master

MrStabby

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Good synthetic gear oils are incredibly tough. You typically triple the drain interval. So for an ordinary car, go from 100,000kms to 300,000kms. Not sure what that means for your 800hp beast tho.

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tricstar Mentor

tricstar

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Good synthetic gear oils are incredibly tough. You typically triple the drain interval. So for an ordinary car, go from 100,000kms to 300,000kms. Not sure what that means for your 800hp beast tho.

cheers Stabby, 30000-50000 you'd think at least.. was only done about 5000 ago, so won't worry about that for a while...

would it be similar for the OS giken two way in the front? :(

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MrStabby Grand Master

MrStabby

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cheers Stabby, 30000-50000 you'd think at least.. was only done about 5000 ago, so won't worry about that for a while...

would it be similar for the OS giken two way in the front? :(

Yeah i'd say so - the only concern it if it gets cooked, but synths handle heat a lot better as well. If you're paranoid get the oil tested, say after 20,000 and then you'll get an indication of how long it lasts under 800hp of punishment.

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Moodles2 Grand Master

Moodles2

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Best time to know when it needs changing is when it goes black, when my mechanic changed every drivetrain fluid (front & rear diff, attessa, transfer case, gearbox, clutch, brakes), all of them were black, except for the front diff which still looked brandnew. I'm guessing because the ATTESSA system is a part-time system, the front diff could go alot longer without changing than the rear.

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tricstar Mentor

tricstar

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Best time to know when it needs changing is when it goes black, when my mechanic changed every drivetrain fluid (front & rear diff, attessa, transfer case, gearbox, clutch, brakes), all of them were black, except for the front diff which still looked brandnew. I'm guessing because the ATTESSA system is a part-time system, the front diff could go alot longer without changing than the rear.

yeah that may be the case normally, but I think my front does more work than normal, spins all 4 a bit when boost hits in first, and I have torque split controller, so put more to the front than factory.

But if I'm going to the effort of getting the car on a hoist or off the ground enough to check diff oils, I'll just change them for the cost of a bit of oil. i like the idea of getting it tested at 20k or there abouts, then I'll know if its still good, just started doing this with the engine oil and its well worth the $35, I'd recommend everyone does it, gives you some handy info about your motor.

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Deano 1 Mentor

Deano 1

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man i wouldnt worrie about it aye, change it but dont worrie about changing it all the time, every 50k's maybe id leave it longer. with 800hp behide it the oil isnt gunna save it, no matter how new it is.

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