Biodiesel question.

Submitted: Tuesday, Feb 07, 2006 at 21:03
ThreadID: 30534 Views:1677 Replies:5 FollowUps:7
This Thread has been Archived
Hi Guys,

A friend of mine has started using Biodiesel in his 3lt Surf, he is on his second tank and is telling me his fuel economy has dropped off by 100km a tank (60lt tank so quite a lot).
Anyone had a similar result?
Back Expand Un-Read 0 Moderator

Reply By: Member - David 0- Tuesday, Feb 07, 2006 at 21:10

Tuesday, Feb 07, 2006 at 21:10
Should be better, as it is generally higher octane and better lubricity.
Sometimes causes blockages of filters and such but I've not noticed reduced econmomy
AnswerID: 153716

Follow Up By: desert - Tuesday, Feb 07, 2006 at 21:28

Tuesday, Feb 07, 2006 at 21:28
Just a technicality, but diesel fuel has a cetane rating, not octane.
0
FollowupID: 407620

Follow Up By: Member - David 0- Tuesday, Feb 07, 2006 at 21:32

Tuesday, Feb 07, 2006 at 21:32
Yeah I couldn;t think of the word, and I'm a flamin chemist....brain dead. :-)
0
FollowupID: 407622

Reply By: Vivid Adventures - Tuesday, Feb 07, 2006 at 21:12

Tuesday, Feb 07, 2006 at 21:12
If he hasn't replaced his fuel filter, I'd suggest his fuel filter is clogged with the rubbish that has collected in his fuel system over years of dinosaur diesel.

I did replace my fuel filter after the first tank, and the collected deposits are quite evident. Now my economy seems better - but I don't have too much scientific data to go on.

Would strongly recommend he do that if he has not already?

Ciao for now
Andrew.
AnswerID: 153718

Follow Up By: 1KZ-Mick - Tuesday, Feb 07, 2006 at 21:33

Tuesday, Feb 07, 2006 at 21:33
Thanks, I'll suggest that to him.

Mick.
0
FollowupID: 407623

Reply By: Footloose - Tuesday, Feb 07, 2006 at 22:56

Tuesday, Feb 07, 2006 at 22:56
AFAIK this is fairly normal, but it should be more than offset by the cheaper price of biodiesel. Is is cheaper isn't it ? Or is this just another example of having to go into the red to be green ?
AnswerID: 153748

Follow Up By: Michael ( Moss Vale NSW) - Wednesday, Feb 08, 2006 at 07:20

Wednesday, Feb 08, 2006 at 07:20
Its about 10cents a litre cheaper, but as diesel prices climb, watch the biodiesel prices climb,,,, funny about that..
Patrol 4.2TDi 2003

Retired 2016 and now Out and About!

There's time to rest when you're dead,
Get out and do something instead!

Member
My Profile  My Blog  My Position  Send Message

0
FollowupID: 407681

Reply By: Snowy 3.0iTD - Wednesday, Feb 08, 2006 at 08:37

Wednesday, Feb 08, 2006 at 08:37
Mick

Although Biodiesel has higher lubricity and is better for the environment I recall reading somewhere that it actually has a lower energy value than ordinary diesel. This makes sense to me, as every time I have tried it, I get poorer fuel consumption figures, and noticeably less power under the right foot.

Regards

Snowy
AnswerID: 153789

Follow Up By: Vivid Adventures - Wednesday, Feb 08, 2006 at 08:40

Wednesday, Feb 08, 2006 at 08:40
perhaps you are cleaning out your fuel system with it too?

Get your fuel filter replaced next service!

Ciao for now
Andrew.
0
FollowupID: 407686

Follow Up By: Member - Oldplodder (QLD) - Wednesday, Feb 08, 2006 at 09:01

Wednesday, Feb 08, 2006 at 09:01
The cetane rating of the biodiesel depends on the oirginal type of vegetable oil used. Some give a lower and some give a higher cetane rating than petroleum based diesel. But there is an assie standard coming in which will solve the problem.
So doubt it is cetane rating, try your filters.
0
FollowupID: 407694

Follow Up By: Snowy 3.0iTD - Wednesday, Feb 08, 2006 at 09:02

Wednesday, Feb 08, 2006 at 09:02
Andrew

I did all the reccommended stuff including replacing fuel filters, have used it on multiple occasions, and I would have thought that a blocked fuel filter would lead to fuel starvation and lack of power, but can not see how it would increase fuel consumption.

Snowy
0
FollowupID: 407696

Reply By: viz - Wednesday, Feb 08, 2006 at 20:49

Wednesday, Feb 08, 2006 at 20:49
Wonder how they go with common rail diesels - which use much finer nozzles. Filtration is a much greater issue with this type of injection system...

/viz
AnswerID: 153929

Sponsored Links

Popular Products (13)