So had a little time to photograph crankshafts/Big end bearings that have been run on exol,
Pic1-2 This was a TS1 motor, the conrods big end eye showed signs of overheating (Bluing) as did the BE cage and the rollers,
,
Pic 3-4 another big end ran on exol-bluing/overheating visible on rollers/ cage/ pin
pic 5-6 Big ends/pins from TS1 running motul semi
Big ends exol-motul semi
spot the exol ran BE
Crank pins-exol
non exol
When it all goes wrong an RB20 rod/bearing/pin=The owner was running a high grade castrol fully synthetic @2% after listening to his mates and reading internet forums regarding 2 stroke oil % ratio's , a very expensive lesson in the art of Lambretta crankshaft under lubrication.