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Hi guys I have a r32 gtst it is mostly standard, now the box that was in the car was screwed not bye me so I got a used one from KYP in Perth and hyperdrive fitted it. But some times when I change into third and fourth it crunches and knocks but only when the box gets warm. I thought it might be the oil being to thin so I got thicker stuff and it's not as bad but still does it sometimes so I was wondering if it is bad to put to thick of oil because I might try thicker stuff.

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Redline Lightweight Shockproof

Nulon G70 Gearbox & Differential Treatment

If that doesn't fix your issues nothing will, meaning you've bought a dud gearbox.

Film thickness greater than an SAE 75W140, yet low fluid friction like 80W gear oil or 30W motor oil.

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So it wasn't the oil I had a look at the clutch pedal and changed some stuff and had a fiddle. I think the clutch was set wrong because after I changed it it was a lot better it still makes some noise but doesn't fight me when I try to change gear it's all smooth to shift now so I thought I'd let u guys know

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