159 Cruiser and
AO Silver Member
Join Date: Jul 2012
Location: United Kingdom
I think some of the newer bearings have a special channel in to encourage the oil to flow through (though I could just be making it up).
As 159 kid states, lubrication (6th gear lubricated by splashing only) and overheating is the main issue.
- Change the oil more regularly ( fresh oil maintains its properties), contaminants also increase wear
- Better oil (full synth denatures less), also get more viscous oil (redline mt90 as a reference is 30% more viscous at 80c than standard OEM)
- Change the bearings ( these changed over time, some (not necessarily the newest) seem to be better)
- Treat the bearing (eg freezing makes them harder)
- Keep the box cooler ( oil is more viscous colder, and denatures less), some People have fitted oil coolers, the pump also sprays the bearings)
- Some have fitted oil header tanks ( more volume of oil to heat/ disperse heat)
- Fit fins to the gearbox ( the design has changed with more fins on the new M32 showing heating is an issue).
- Drive more conservatively.....nah! (though I try and keep from accelerating below 1,500rpm)
159 1.9JTDM Ti and Giulietta 2.0 Veloce
ex: Punto 55s, Golf Mk5 1.4FSi, A3 (8P) Sportback 2.0TDi SE, A4 (B8) 2.0TDI S-Line, 306 HDI Meridian