veg oil compatability

admiral51 · Post by **admiral51** » Wed Nov 28, 2007 10:42 pm

i know this is not probably the "right" forum to ask this question but ive been given 100% honest advice on everything else citroen related so i place my trust in the good people on here with more knowledge than myself

a mate at work has a cavalier 1.8 d L plate 1994 with an isusi(sorry about spelling) engine

can he run it on veg oil without mods he has a 2000 W plate pug hdi which i told him he cant but not sure on his steed for work

thanks in advance

colin

MULLEY · Post by **MULLEY** » Thu Nov 29, 2007 12:49 am

Most old diesels can, what i believe is more important than the engine is the type of pump it uses. If its a bosch one, then its probably fine, however, seeing as its winter start with a lowish solution of approx 10% veg oil & 90% diesel/derv, then gradually increase the solution to a max of 20%.

In summer you can run higher concentrations. Not tried this myself, i'm currently using 50% bio diesel, 10% veg oil & 40% normal derv. This is in a BX 1.9 n/a.

It would proabably be a good idea to have a good look on the internet for specific advice on the isuzu engine to see if there are any issues. Using veg oil does put more strain on the pump, which if its on its way out anyway, will deffo bust it, but how long this takes is anyones guess.

He could buy a veg oil heater to help take the strain off the pump & then he could run a much higher concentration of veg oil to derv, something like 70-80% veg oil.

@ 56p/l, he could save a stack of money.

Let us know how your mate or your research into this goes.

Xantiaman · Post by **Xantiaman** » Thu Nov 29, 2007 9:20 am

The Cavalier had a 1686cc (1.7) turbo diesel made by Isuzu, it was indirect injection aswell and made 82bhp, good strong engine like the XUD9, possibly a bit more free revving and not as good mid-range. I know of a few people running veg on them as i think they all have Bosch pump, as mentioned a few litres at first, then more, then more!

Be lucky to find it for 56ppl though more like 68ppl from lidl but your still saving £10 per 30 litres compared to diesel.

admiral51 · Post by **admiral51** » Thu Nov 29, 2007 7:29 pm

thanks for the replies guys

have had a look at www.veg-oil-car.com and looks like the 1.7 d Isuzu engine has been run with veg in cavaliers and astras with no real problems but it would seem the Bosch pump is the critical piece here.

have passed the info on and now its up to him to check,double check and then hold his breath as he pours the first litre in

colin

MULLEY · Post by **MULLEY** » Thu Nov 29, 2007 10:54 pm

If he's worried about using SVO, why not try biodiesel instead, thats available for 90p/l or less, still a significant saving of approx 15p/l.

admiral51 · Post by **admiral51** » Thu Nov 29, 2007 11:42 pm

MULLEY wrote:If he's worried about using SVO, why not try biodiesel instead, thats available for 90p/l or less, still a significant saving of approx 15p/l.

hes just a bit green with envy that i can run one of mine on SVO

and decided he would like to see if he could shave a bit off his fuel bill as he has a 280 mile weekly commute

think he is going to check what type his pump is and give it a go

colin

MULLEY · Post by **MULLEY** » Fri Nov 30, 2007 12:53 am

Let us know how he gets on.

Xantiaman · Post by **Xantiaman** » Fri Nov 30, 2007 8:57 am

Think he will have trouble visually identifying the pump as its located underneath the inlet manifold and induction box.

MULLEY · Post by **MULLEY** » Fri Nov 30, 2007 6:44 pm

If unsure then i wouldnt personally use SVO, not worth saving a few quid now to only have to buy or fix the pump when it self destructs. Best safe alternative is to go via the biodiesel route. Some places are as cheap as 78p/l, not round here unfortunately.