Auto Trans Fluid Used In 5spd Manual Boxes??

[VLRB20DET]

Anyone ever heard of people using Automatic Transmission Fluid (ATF) in 5spd manual boxes in skylines, Apparently its supposed to give them better lubriction and quiet the gearbox operation down

If anyone has done this or know if it works well please put up a post as I want to hear other peoples responses before doing it to mine

[Cubes]

Its bad for the gearbox. Mine required a rebuild after 30,000km's.

The car yard I bought my old VS 5ltr 5speed (now sold) did this to its gearbox.

Little did I know until I went to drop the oil as the shifter was locking in to place and became really sticky.

It turned out the box required a rebuild as the auto trans fluid stuffed the syncro's, unsure how true it is but apparently the vs 5ltr 5speed had fibro syncro's?!?!

Use good old castrol vmx80 or castrol syntrax 75/90 I think it is.

If have $100 to throw around drop some redline in to it.

I personally think castrol syntrax is just as good.

Edited August 21, 2005 by Cubes

[stagefumer11]

90% of miti's use ATF from factory in there manual box's all depends on the design

[VLRB20DET]

What about Nissan Skyline boxes, im mainly interested in peoples responses on the RB20DET/RB25DET 5spd's ???

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Cubes - Yeah I have heard good/bad stories about using ATF fluid on 5spd's

Stagefummer11 - I was told today some ford 5spd's used ATF aswell

[Cubes]

Try it and let us know..

By the way you are talking it sounds as if you box is due a rebuild anyway.

[VLRB20DET]

Yeah im running a R32 Gts-t 5spd and yeah when I come on boost you can hear a high pitch squieling noise from it so id say the bearings are goin to die soon,

I will be looking at either a properly built JATCO or a R33 Gts-t 5spd

either way im looking at 2500 which ever way I go

[elbee111]

My belief is that car yards used to use Auto fluid when the gearbox was on its way out to smooth changes etc.

I used to own a VH with a 5 speed and thought it was time to change the gearbox oil. Put the recommended stuff in and could barely change gears.

Strained out the metal bits and put the shit back in. Worked fine till it was written off.

El Bee

[dangerous_daveo]

Ok from what I know, its obviously a thinner oil. So its used when you have lazy syncros etc, the box is still stuffed, but it will give you a bit of time to save.

Now when we pulled out the redline oils book to, their shockproof ultralight said in terms of thickness it was near on identical to auto fuild. Its basically due to the additive in it.

So your options would be, auto fuild at what $25 for 4L? Some normal fuild and aditive, cost would depend on additive and the actual oil you pick, or the redline stuff at $100+. If the box is RS anyway, just go the auto stuff.

[Cubes]

Try it ... If it helps with the whine good. If not drop in some thicker stuff, hopefully that would help?!?

Mine whines like crap also. I put up with it.

First second are extremely noisy, third not so bad, 4th 5th are annoying.