Vauxhall Vectra 1998 DL (not the turbo version.)
Ran well on bio with no loss of performance, no modifications rqd. It had the Bosh pump & injectors. Had to scrap the car because it had a repeatedly dodgy engine mount. Bought it 2nd hand so the car had probably been pranged and the frame was a wee bit bent.
My friend runs a similar age Pergeot 306 diesel and has made no mods & hasn't had any issues with performance either.
You get told that bio derv rots the rubber hoses. Perhaps it does on older cars but no problems found on these two by K & I.
Madest thing I ever saw was an article in Chemistry & Industry magazine about 25yrs ago now

