I`m considering getting hold of a 2009 Doblo to pull a caravan. Now, my previous petrol one was almost too light on it`s front paws to pull itself (slight exaggeration) so I wondered if you wise old elfs on here would comment on the diesel (organic) choice for this purpose? Also, towing (nose) weights . . . and etc . . . Thank you! . . . I`m new by the way . . .