A waiter in our local Indian restaurant, claims to use cooking oil...;)

Yes a diesel Landrover or any other diesel for that matter will run quite nicely on Chip oil!
Conversion kits:-
ATG Vegetable Oil Kit - Vegetable Oil Conversion for Diesel Vehicles (SVO/PPO/WVO)

Mine runs nicely on cooking oil. First 2500 litres are duty free after that you self declare.

Avgas does not fall into this category and neither does red diesel.......

No, I wasn't referring to the use of AVGAS on the road.
It's possible to buy tetraethyl lead additive and mix that with unleaded petrol.

The blue dye colour of AVGAS would tend to be a bit of a giveaway if that's all that's in the tank..


As far as using veggie or biodiesel in "any" diesel engine...not so in my car. The owners' manual specifically says it's not to be used.

The irony of the whole situation was having some toe rag nicking fuel from our aircraft for his Corsa being caught with over 200l in his car and in Jerry cans and only getting a caution.

My mate was just using the left over waste samples from his fuel bowser. Only a lunatic would pay to put savages in a V8 Landrover!!

I certainly wouldn't have savages anywhere near my car....

Goddam auto correct.....

I've seen quite few savages in V8 Land Rovers.

A ahem friend of mine used to put some 100LL in his Holbay engined Hillman Hunter GLS !(up to 50/50 !

It was a fairly high compression engine and the demise of 5 star fuel meant that it pinked like a ba5tard on 4 star...no such probs with some 100LL on board LOL :)

Racing brew for old bike
 

My old shortstroke Manx Norton use to run quite nicely on 50/50 super unleaded/avgas and a splash of proboost octane enhancer. Any avgas always made plugs difficult to read to get the jetting right though. I was told not to use 100% avgas as it is designed for quite slow revving engines and would struggle to get complete combustion in my old 7000 rpm motor.

You have to watch some types of fuel component rubber materials with AVGAS, they can be adversely affected.

A reason not to add too much in the mix!

Try putting Veg. oil or Biodiesel through a Delphi pump-equipped diesel and you'll learn a VERY EXPENSIVE LESSON

You caneasilymake Biodiesel from waste cooking -oil...a lot of older diesels will,indeed, run well on pure "chip-fat"... otherwise , filter, titrate and convert properly.. If you get your titrationwrong, you can get a residue of NITRO-GLYCERINE instead of ordinary Glycerine. -not recommended for a longand healthy life.....YOU STILL CAN'T USE IT IN A LOT OF MODERN DIESELS especially Common-Rail.

UK pump-diesel is now mandated by law to have , IIRC, 5% bio-content.
Research the problems with the Renault engine....fitted to :- Mazda6, Volvo V40/ S40, Renault Megane /Espace..Mini diesel...........Don't take my word, it's all out there onthe motor forums....yes, I know I'm a Saab dastard as well.:O

Somewhat academic really, but that is not correct.

The current legal specification for diesel (EN590) in the UK allows any FAME content between zero and 7%. Makes no difference to the rest of the points made in cockney steve's post though with which I generally agree.


As for using 100LL in classic vehicles, one thing not yet mentioned above is that they may become more difficult to start in Winter (due to the lower vapour pressure of avgas compared to winter grade 4*)

I would also endorse the Miller classic fuel additives, we have clients with a range of cars from the early thirties through to modern day classics, we have been supplying and using Millers products for many years without any problems at all.

Which is why you should only add it to unleaded petrol, about 1 to 4.5, which brings it up to the level of the old 4*. In fact it's probably more like 5* at that ratio, due to the better basic formula of today's fuel.

Once you've got enough TE lead in the fuel to prevent pinking, there is no point adding any more; it will cause more problems than it's worth, such as plug contact whiskering. So AVGAS is best used as a fuel additive, rather than a replacement fuel by itself.

Obviously, for off-road use only, to remain legal.

Back in '76 I bought a Renault 5 which required premium fuel that over the next few years became unavailable as unleaded took over the premium pumps:uhoh:

100 avgas blended in worked very nicely, but gradually airfields began refusing to sell for automotive purposes because of legal pressures.

Tetraethyl lead is said to be a nasty substance; so octane boost is better from other chemicals.

That was the last French car I bought. It required a steady diet of wheel bearings and CV joints before it rusted out:ugh:

After a move it turned out that my new landlady had an R5. She saved herself a bunch of money when she took my advice to get rid of it before 65K miles.