2.5 VM
I did several thousand miles on bio in the 2.5 VM. Ran perfectly, no obvious loss of performance. I know that a lot of people were chucking fltered WVO into their Scorpio's with the same engine with no issues. I looked at it in very simple financial terms.
Cost of a second hand pump - £100
Set of injectors - £80 - £120
Fuel saving in the first month - £180.
Before the rear axle went pop I ran it for 6 months virtually exclusively on Bio. I reckon my total fuel saving in that period was approx £900 (which is £500 more than I paid for the car) so for me it was a no brainer !
3.1 Troop
I bought the 3.1 Trooper because I specifically wanted a simple engined 4x4 that could run Bio, and from all the research I did the Trooper 3.1 came out as the best option. Waste oil (which is the base ingredient for Bio) has rocketed in price of late, so I pay 96p per litre, which isn't cheap but still a hell of a lot cheaper than diesel from the forecourt. I've only run two tanks of Bio through it as my supplier ceased production , but i've found another so i'll be using him in future.
Bio fuel itself is not all the same and can be a bit of a lottery. As with anything else join some of the bio forums and see if you can get a personal recommendation.
I know Yaki has run his 2.8 on Bio for much longer than I have and I would imagine the savings he has made would pay for his entire truck twice over.
EDIT: Just about the best resource I have found on the net > http://www.vegetableoildiesel.co.uk/forum/index.php














