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Hey currently running 10-40 semi synthetic penrite, done 5000km and still honey clean.

Gearbox using vtx castrol 70-90 but thinking of changing to Penrite sin 75-85.

Seems like an ok combination? Does nissan sell genuine oils for at least the gearbox?

What a good oil to use? Mainly interested in gearbox oil.

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I was about to ask the same question about 34 Gearbox oil, but mine is a little more troublesome. After some hardcore dyno work i noticed 4th was an issue, later followed by bearing type noises in 2nd & 3rd gearshifts and also sometimes at idle.

Some damage is obviously present on 4th, whether its glazed of not i dunno, but i want to know what it that "good oil" you hear about when somebody mentions a few box drama's?

Need to know ASAP as the car is not being driven at the moment. :down:

Just get it fixed Matt...a heavier viscousity oil (85w140) may silence the problem for you, but it will come back in 5-10,000km and may cause even more damage by then. Sounds a bit like a cluster bearing to me.

Just get it fixed Matt...a heavier viscousity oil (85w140) may silence the problem for you, but it will come back in 5-10,000km and may cause even more damage by then. Sounds a bit like a cluster bearing to me.

Yeah, i know what you are saying... But i need to keep it going till the $$$'s are available. I might try the Redline Shockproof stuff and see what happens?

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