Used cooking oil??

mumtotwo · 11-01-2010, 18:50

Hi all,
Is there anyone out there that uses used cooking oil in there diesel car,
If so PM me

Retlaw · 11-01-2010, 19:25

Quote:

Originally Posted by mumtotwo

Hi all,
Is there anyone out there that uses used cooking oil in there diesel car,
If so PM me

You can't just put cooking oil in a diesel, it has to be processed first.

Retlaw.

Rastus · 14-01-2010, 13:14

Quote:

Originally Posted by Retlaw

You can't just put cooking oil in a diesel, it has to be processed first.

Retlaw.

True for most vehicles it usually requies converting to Bio fuel, some older diesel engines can just run on straight cooking oil although it would be inadvisable in the current weather.

Neil · 14-01-2010, 13:42

Quote:

Originally Posted by mumtotwo

Hi all,
Is there anyone out there that uses used cooking oil in there diesel car,
If so PM me

If you wanted to use used cooking oil it does need processing first. Nasty acids and bits of chips in used oil. It is converted to bio diesel using a process called transesterification usually using methanol. This gives you bio diesel. The funny thing is that the methonal comes from crude oil so it not very bio

I used to use bio from a legal source a few years ago but I had an older non direct injection diesel car. I would only use bio in a new diesel engine if it was supplied by the big companies.

Older indirect injection diesels can use straight vegetable oil (SVO). The only problem as mentioned above is the temperature. When cold veg oil is thick and puts a lot of strain on your fuel pump which is expensive. the way around it is to heat the oil to about 80c where it is similar in viscosity to diesel at 10c - yes I have written this from memory and yes i am a sad git.

Saying all that in summer a few years a go I was throwing 3 litre veg oil bottles straight in the tank. The bottle neck is the perfect size for the fuel filler hole. My plastic bottle recycling bin was very full lol. It was best with a bit of ordinary diesel to thin it out a bit. Completely illegal though as no duty has been paid on the fuel.

On veg oil the car was smoother running at low revs but was a little less powerful on the motorway. It was damn cheap at the time as the supermarkets were having a bit of a price war. Used to get funny looks with 15 3 litre bottles of oil in my Sainsbury's trolley and a loaf of bread

Out of interest what is your car and how old is it?

mattylad · 14-01-2010, 17:08

Hmm, are you sure that she is asking that?

Looks more like she may have some available to me.

Hence the PM request.

accyman · 14-01-2010, 17:15

do not use cooking oil or bio-diesil in new cars it will ruin your car, just google about it and you will see how it corodes seals etc

however my mate had an old perkings diesil engine and mixed neat cooking oil not used and diesil together and ran with no problems but it was an old engine which was not hampered by modern technology lol

Neil · 14-01-2010, 17:20

Quote:

Originally Posted by mattylad

Hmm, are you sure that she is asking that?

Looks more like she may have some available to me.

Hence the PM request.

You can make bio on the stove in small batches but are more likely to end up with soap than bio diesel

accyman · 14-01-2010, 17:21

Quote:

Originally Posted by Neil

You can make bio on the stove in small batches but are more likely to end up with soap than bio diesel

well if you cant run yor car off it you can at least clean it

Neil · 14-01-2010, 17:28

A diesel car will run off engine oil, they are a bit smokey though when they do it. Oh yes and it melted a piston and all the glow plugs when mine did it