Club 80-90 Forums

My gearbox whines in 3rd, 4th and 5th. I know it needs reconditioning, really, as it has most likely done nearly 300,000km without major work: but in the meantime, is there an oil viscosity that will quieten it? I was thinking 75W-140 ... but may be being misled by drunken internet reading. Any thoughts?

In a word, no. Heavier oil will just make it run hotter and make things worse.

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Ok thanks, thought as much really. Pension pot raid imminent then, for gearbox rebuild.