2004TOMMYM

2004 skoda superb 1.9

Im a local taxi driver using approx 100 ltrs a off diesel week which cost approx £100, Ive seen that you can pour straight veg oil drectly into the tank, or with a slight mix which enables too cut costs, I dnt want too produce bio-derv, just looking a cheap and easy option



1 has any1 tried this
2 does this need to be mixed with anything
3 what MPG would you be likely too achieve

thanks

tommy

Octygone

Not a good idea.....PD engines don't like bio diesel let alone veg oil.....I think you can use 5% bio diesel but that is it

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Ben Smith

Will be interested in what you find on this. Had also been told pd engines don't like it. Also run a superb as a taxi. Only problem is i'm using about 250 litres a week!!! Yes, fuel bill is a nightmare and now it's hit £1.13 per litre round here, anything that can save me money is good!

Ben.

Supurbia

Don't do it, you will end up with a gunked up fuel delivery system, if it was as cut n dried as that everyone would be doing it.

ChrisBP

I tried it about 9 months ago - had 25% veg oin in a full tank. It worked okish - bit lumpy when starting and not as smooth at 85MPH plus. Decided not to bother as I feel the most you can get away with is about 10-15% without ann noticable drop in performance, so saving is minimal and potential for damage is high. I only use BP ultimate anyway. PD engine seems to get clogged up on anything else.

2004TOMMYM

iv'e tried bio-derv a few times with no loss off power etc

2004TOMMYM

m8 you must sleep in your taxi LOL

Supurbia

If you're doing this sort of mileage, surely you'd be better off buying a petrol car and LPG conversion, I assume you do long distance most of the time, so one of these would run at 30-35 mpg at 52p a litre.

Ben Smith

Yeah, spend far to long in taxi. To be fair, most of my work is aiport trips and lots of them!!! As far as LPG goes, yes, it is cheaper and we have a BMW 325 touring running it now, currently on 260k. Only problem we've found with gas is that it you need to keep car for a decent amount of time before it pays. Oh, and my old omega that was on gas had a habit of blowing spark plugs through the bonnet!! Not the end of the world but just tend to find the diesels easier. If we get a problem we can just move a diesel car on.

Ben

Supurbia

It'd repay in 6 mths the miles you do, average 2k for a 4 cylinder conversion.

Ben Smith

Yeah, conversions about the the same cost here. The bit we're getting stung on at the moment with the other car is cost of getting gas serviced to pass taxi test. One of those things you just have to except I guess. Prob gonna change car around september, not sure what for yet.

Ben.

THE KICK INSIDE

wouldn't try it on pd engine! the injectors wont like it without fitting tank and fuel pump heaters - on an old school diesel you can run up to about 30% winter more summer with no issues but you need to do more frequent fuel filter changes, also you should process it strictly speaking to remove the glycerine and balance the pH. it will also give less mpg than derv but the engine tends to run better and on distributor pump blocks it helps pump lift (lubrication) - tends to run smoother and smell of cod and chips driving down the road....

to be honesti wouldnt put it anywhere NEAR a VAG deisel its a very differnt beast form say a merc block or a mitsi 4m40 - both of which will run on anything you like pretty much! (think tractor engiens!)

johnjohnhealy

I run my Mondeo ST as a cab and am also getting p*ssed of at the cost of fuel.

Anyone know if you can run the mk1 Octy SDi on veg oil? it must be a pretty basic engine, no turbo or anything.

I'd seriously consider it at the moment!