Clattery when cold
Join Date: Feb 2012
Location: United Kingdom
County: Greater London
I had a lot of trouble getting the undertray off because of that rotating bolt and crusty screws, which annoyed me, so sorting it out is, I hope, the final bit of undercar unpleasantness for a few months, alternator permitting.
The 6-speed on the 147 is a different box to your M32. Mine is fine, very slick if a bit 'slow', but I don't trust the current mfr. BS of 'lubricated for life'. Oils do wear out eventually and then the 'life' is shortened. At 8yrs/78k new oil seems a good idea, just preventative maintenance. I've changed gearbox oil on a couple of cars recently. My old espace at 25yrs/100k instantly went from being notchy and baulky to delightful, it felt like a new, just run-in gearbox. The same on my wifes little Peugeot 107 at 10yrs/50k, though not as pronounced. Neither had any actual problems, but what came out was filthy and knackered, with the viscosity of water.
With the M32, it seems more a matter of life preservation, as some bearings fail through incorrect clearances and excessive heat. From what I've read in this forum using a better oil than AR specify, and cramming 3L into the box (instead of an official 2.something), helps it stay in one piece. A forum search will supply more info. As usual, Ned at Autolusso is the man.