Just had my car serviced at Techniques including a Bevel box oil change,they rang the factory to get guidelines of where to fill to after i told them about the difference of opinion on TM ,the Factory confirmed that the Bevel box should be filled to the oil level plug not the orange breather ??!!(I think they said it was Mark at the factory)
2015 +4 and 2000 4\4 1981 Lambretta GP225 1960 Lambretta LI 125