Hi Jeremy
all the Toyota hilux & 4runners run inline pumps and the pistons are a controlled expansion alloy, so they will run bio or veg +% Dino OK, plus Toyota designed their diesel engines very well and can cope with pretty horrible fuel, but even these will have shorter life on veg oil, and we know from painful experience that Common rail injection systems hate the stuff.
the main prob with veg oil is that the Hydrocarbon chains are a lot longer and in some engines this will polymerise under high presures and temps = turn to a sort of burnt plastic :-( blocking the injectors and will cause a symptom called trumpeting, a small cone of polymer forms on the tip of the injector ask any iveco dealer.

Julio
if its a TD42T its non direct injection but if I'm right you have a rotary pump? so if you intend to use Veg allot then the two tank and pre warm will be the best bet, you only need a small tank for diesel, a small 30-40 ltr one should be fine as even the king of veg oil engines = Mercedes likes the occasional bit of Diesel as if you run them too long on Veg they are a bugger to start after 5-600 ltr's of veg otherwise 50/50 or 30/70 Veg/Dino wil be the way to go.
Another couple of web sites
http://www.vegetableoildiesel.co.uk/forum/index.php
http://www.journeytoforever.org/biodiesel_make.html
Hope this helps.

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Rob
Bedford MJ Old, Slow & Orange
Your Best travelling companions are
an open mind and a smile :-)

[This message has been edited by Bert (edited 23 February 2006).]

__________________
Rob
EX Bedford MJ
Your Best travelling companions are an Open mind & a Smile :-)