Only discovered the Veg oil thing after I totalled my Marea & bought a Xantia TD.
I've been following extensive discussions on frenchcarforum.co.uk & I'm now using a high % veg oil / dino diesel mix in the Xant.
The consensus there seems to be:
1. Bosch fuel pump only. Don't even try it with a Lucas. It
will break.
2. Cars happy to run up to 100% veg oil in summer. Some run anything from only 20% veg up to 80% veg in winter. Discussion ongoing about how hard the pumps'n'stuff have to work when cold & veg going unburned into oil reservoir.
3. As such it would appear to be wise to change oil regularly due to veg contamination.
4. Yep. Change fuel filter regularly too.
5. The Cit guys seem to prefer Rapeseed oil as it is thinner than corn & others.
6. Lidl currently cheapest for rapeseed oil @ 56ppl but sold in crappy 1 lit bottles.
7. Little support for heating the oil even in winter, as once the engine is up to 60deg the fuel leaving the pump is hot enough. If your car is worth a bit (but you're driving a Fiat
(oh how the worm has turned
)) then you might consider a two tank system.
8. Try
www.vegetableoildiesel.co.uk/forum for further advice on straight veg & waste veg oil use.
It does go on, but I hope it's helpful.
Happy vegging!