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Nelson_R32

Running Audi 80 TDi on biodiesel?

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I've managed to come into a cheap 1995 Audi 80. 203000 miles but in stunning condition :wink:

Just wondering whats the best mix of biodiesel to use on the car?

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You'll probably need to change the fuel filter after you've run a bit of veg oil through as it will drag a load of crap off the bottom of the tank up into the filter. You should be perfectly OK running 100% veg oil but it's much heavier than diesel and it very gloopy in cold weather so either fit a tank/line heating system or start with 20% veg oil and see how you go.

You'll probably burn the fuel pump out eventually though. Especially in the cold weather. And it will be VERY hard to start in a morning so I hope you have a strong battery in it!

To be honest when I looked into it veg oil was £1.20 a litre from the cash and carry versus diesel at £1.30 so it wasn't really worth it unless you're going to filter waste oil.

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Yeah, prices have rocketed, but B100 from a petrol station should be fine... better than veg oil as it will bugger piston rings* if it's not very finely filtered

* - Not sure if I have the right part, but it's something like that!

Check on t'internet and see where your nearest b100 petrol station is. PD's can't do it though.

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Jon might be the one to ask on this subject, He knows a fair bit about Bio-diesel.

He's Avant_b6_130 on here I think.

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