Btw,
I love the citroen relay and Peugeot boxer - both real reliable vans great turning circle and good to drive and even the L1H1 takes a tonne
Darran
As long as they are serviced regularly and correctly they should be ok.
Oil pumps and oil starvation are a problem with the Ford 2.2 engines they use in these vans. If the oil pressure warning light starts to flicker the driver must stop immediately and you must get the van recovered.
In most cases replacing the oil pump and sump will sort the problem out.
I don't do many long runs with my Boxer. They seem to have the dpf filter regen program well and truly sorted as it works and I've no idea when its working.