At risk of sounding terrible physics, is it fair to say if you lift either the back or the front you're only lifting half the weight (approx), with the wheels taking the remaining load? Of course the front will be heavier due to the engine, but surely within the limits of 2.5 ton jack?
Lifting one corner at a time is never going to be more than 2 tonnes per corner, plus it is a Kombi not a full on camper van
Yep, fair point, I did think that after I'd posted.