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Hey

I ended up getting the castrol vmx80 for my gearbox but i never bought any diff oil, i'm about to get some of that redline 75W90 for the diff, the only thing i'm not sure about is do i go for the synthetic oil or the shockproof oil? on there site the 75w90 is listed under synthetic only, not shockproof.

If i do go for shockproof, should i get the superlight - lightweight or Heavy.

thanks

Edited by Hulk1010
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Redline 75W90 Gear Oil is supposedly good.

I use it in my diff it is very very good , always had problems around roundabouts and tight corners with the inner wheel locking up tried a few oils none were any good , redline fixed my problem

I thought shockproof isn`t an LSD oil only for the gearbox, i use the Blue shockproof in my gearbox its mad too

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LightWeight ShockProof™

A unique gear oil designed to lubricate racing transmissions and transaxles which see serious loads (not recommended for most syncro-type transmissions). It has excellent low-temperature flow which allows easier shifting when cold. May be used to obtain maximum power transfer in racing differentials which do not see high temperatures. Similar to a 75W140 gear oil, but with the lower internal friction of an SAE 30 motor oil.

Used in two-stroke and four-stroke motocross transmissions (often mixed in equal parts with SuperLight ShockProof™ Gear Oil).

Used in most road-racing differentials with moderate power and dogring racing transaxles.

Taken off the redline website , funny it not recommended for most synro gearboxes works mad in mine

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Yeah I'd make sure its suited to LSD diff's though..

You don't need "LSD" oil for a standard viscous diff. the viscous LSD unit is sealed from the rest of the diff enclosure and has its own fluid.

If you have a clutch type LSD (ie, you have a GTR, or your diff centre is aftermarket, or you have a skyline with A-LSD) then you need an "LSD" oil with friction modifiers in order for the clutch plates to work properly.

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I went to repco, autobahn and super cheat auto today and none of them had any redline products that i could see, where can i buy this stuff besides online?

--Nevermind just found some contact locations on there site--

Edited by Hulk1010
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instead of wasting your money on expensive redline which wont' do anything, because your diff is viscious (separate fluid for the viscous), I would honestly, use a castrol fluid.

Castrol lsx90. Cost ya about $30 for a 4L big bottle. You'll need 1.8L.

Castrol oils are a fairly good place to start from. At least it'll be correct.

Then, see how it feels, if it's good, then fine, it's good. From there, if you have a problem, then go mucking around with different fluids.

I have a mech diff, so I'm using motul oil, just so it changes the properties (won't do much to a viscous).

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You don't need "LSD" oil for a standard viscous diff. the viscous LSD unit is sealed from the rest of the diff enclosure and has its own fluid.

If you have a clutch type LSD (ie, you have a GTR, or your diff centre is aftermarket, or you have a skyline with A-LSD) then you need an "LSD" oil with friction modifiers in order for the clutch plates to work properly.

So you only need LSD oil for a mechanical LSD? And viscous LSD has a sealed in amount of its own special fluid you dont ever need to change??

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