smoke emissions on cooking oil

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Fillan
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Joined: 10.11.2003
Location: West Devon

I try and put some diesel in our vehicles for MOTs but recently our local station was out so put a 300GD through with used cooking oil.
It then failed on rust and some other minor ailments but passed the smoke test easily!
Being late for the retest it had another full MOT this time with over 70% diesel in the tank. The tests were 25 days apart and 12 miles travelled between.

Cooking Oil: 1.99,0.53,0.75,0.47 Acceleration mean 0.58

70% Diesel 5.75,2.52,1.73,1.53 Acceleration mean 1.93

Does this suggest these OM 617 engines are cleaner on veggie oil than diesel ?
Anyone else done a smoke test on alternative fuels?

Pistonhead
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Re: smoke emissions on cooking oil

[quote=
Does this suggest these OM 617 engines are cleaner on veggie oil than diesel ?
Anyone else done a smoke test on alternative fuels?

Donno,
Nope.

Regards,

Maxwell Smart
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Joined: 05.11.2003
Location: London
Re: smoke emissions on cooking oil

Yes it should in theory be significantly cleaner and lower your CO2 emissions.

Also vegetable oil is considered carbon neutral as a fuel in regards to lifecycle vs dino fuel which isn't.

However your NOx emissions will be more or less the same as with dino fuel.

Pistonhead
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Re: smoke emissions on cooking oil

Maxwell Smart wrote:

Also vegetable oil is considered carbon neutral as a fuel in regards to lifecycle vs dino fuel which isn't.

However your NOx emissions will be more or less the same as with dino fuel.

:oops: Sorry Maxwell, dino was supposed to be dunno as in 'Do not know'.
Please do not go on looking for dino oil, it does not exist.

Regards,

Maxwell Smart
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Location: London
Re: smoke emissions on cooking oil

On the contrary! You will find dino fuel at your local service station.

Dino fuel or dinosaur fuel is just another name for petroleum or fossil fuels as the case may be.

Pistonhead
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Re: smoke emissions on cooking oil

I thought I might be caught out like this, thanks for the info.

Regards,

mortinson
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Joined: 06.11.2003
Location: Old beehive, Madrid, Spain
Re: smoke emissions on cooking oil

Well before oil prices had gone through the roof and the consequent use of vegetable oil as fuel for cost reasons a good way to pass the emission test in your annual MOT over here was to pour a few litres of sunflower oil just before going to the MOT station....