We recently had this Astra 1.9CDTi SRi 150 brought to us for a gearbox overhaul with new bearings for the M32 gearbox, replacement 75w-90 fully sythetic gearbox oil and at the same time a new genuine dual mass flywheel and Genuine OE clutch:
Astra 1.9 CDTi 150 Gearbox Overhaul