I'm having my newly imported Bongo serviced plus cambelt change by Hallen Imports. After reading advice on here, I've requested that they change the crank and camshaft oils but they have reported that they can only change the front and not the rear. Do you think it's essential to have the rear changed too?
Some info on the Bongo:
1997
29,000 miles
1 Owner
Thanks very much for any help here

Steve