Rb20 Gearbox Oil Capacity

[Eazyy]

Hey guys now I know there's heaps of threads listing the capacity of an rb20 box,, however the reason I ask is that I took the side plug out of the box and filled it from the top till it started seeping out the side and it took about 4 litres before it did that. Is this normal or is there way too much in there?

Cheers

Edited June 30, 2014 by Eazyy

[GTSBoy]

That's about right. Unless someone has pulled half the internals out, there's precious little way to get extra oil inside anyway!

[sweefu]

I swear my RB20 box only took around 2 (?) litres.

But as GTSBoy said, no where else for it to go unless it's pissing out somewhere.

[White GTS-T]

Did you add the oil via the fill plug or through the shifter? If it was the latter, I've found it takes time for the oil to make its way down when pouring through the shifter. If so, your best bet would be to leave the fill plug out and wait until the oil stops coming out of the fill hole, then refit the fill plug. If you added the oil via the shifter and refit the fill plug as soon as any oil started to come out, and didn't allow some time for the oil to make its way down, I think you'll find it is overfull.

[Eazyy]

Yeah filled it through the shifter hole bud, a friend has told me that 3.5 to 4.2 litres is about what I'm looking for.

[Eazyy]

And yeah I fitted the side plug back straight away, might be worth undoing it again and see if it drops any for peace of mind.