Well im almost out of veg oil and i can say the 2.5 can run on veg oil but does run well.
There was a loss of oomph, slow up hills real slow on flat aye but the acceleration is lost if you want to put the foot down to overtake . To sum up its ok on 100% veg oil if you do not want to go any where quickly go up hills apart from that it will run i will stick to biodiesel me thinks or do a mix
1989 Isuzu Trooper 2.6 (3.1 conversion )
1990 Isuzu Bighorn Lotus Edition Hi roof 2.8td
1998 Vauxhall Omega Estate Elite 3.0 v6