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gearbox, diff-lock/4x4 system or clutch worn?
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Old 10 Mar 2007, 11:16 PM   #1 (permalink)
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gearbox, diff-lock/4x4 system or clutch worn?

I'm new to the impreza and just bought a 1995 sti-ra and there is a slight whining/grinding noise
which I think can only be one of the 3 above mentioned items.

This model has the diff-lock, so I hope it hasn't been driven on a dry surface with the lock-on.

The car changes gear smoothly when driven lightly, however after some hard driving she is difficult to put into gear and sometimes crunches, making me think gearbox problem or maybe clutch. But clutch is not slipping, and there is no noise change on idle typical of a clutch problem.

It's the same noise thoughout all the gears.

Any ideas?
cheers
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Old 11 Mar 2007, 06:17 AM   #2 (permalink)
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Try changing the gear box oil to something like Castrol Syntrax. This can make a great differance...... (try cheap option first)
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Old 11 Mar 2007, 09:49 AM   #3 (permalink)
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would never use Syntrax in a DCCD electric centre diff box (and don't use anyhows)...........you need a pukka full synth 75w90 gear oil like millers CRX / Motul gear300
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Old 11 Mar 2007, 09:33 PM   #4 (permalink)
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I think I'll go for the motol. Do you know how many litres I will need for one complete gearbox flush and change?
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