Hi, please don,t say I don,t know what I am talking about or be so rude in the way you say things. My Hymer was a german import and they have been using bio diesel for some time over in germany, The breakdown of bio diesel over time standing unused in a fuel tank ends up looking like a black mass, The german motorhome forums have been full of stories of faults with fuel systems and most have stopped using bio diesel or use a 40/60 split, In the USA truckers have also reported faults when using 100 % bio diesel and most have returned to normal fuel. Your idea of using chip shop oil is i total rubish being talked here. I am only telling it as I see it and as the engineers reported their findings to me. I am sorry that for all the stories but sround stateing how great bio diesel is, if it is in the tank for some time the breakdown of sugars will kill the fuel system. terry
I do not believe that any of my comments could be regarded as being rude as they where not directed at any individual but dealt with some of the common myths that surround this subject. I have no need to be rude or offensive as the facts and evidence support my views.
Here are some links to sites that give good but not too technical information
http://en.wikipedia.org/wiki/Biodiesel
http://www.dieselveg.com/
http://journeytoforever.org/biofuel_library/EthylEsterofRapeOil.pdf
You attempt to claim that I have accused you of "not knowing what you are talking about". If you are taking this from my comments about the smell of a vehicle run on biodiesel, I will state again anything run on good clean biodiesel will not smell like a chipshop.
I would however from the things you have said, consider that not only have you been misinformed but I do not believe that you have researched the subject of alternative fuels, something I can assure you I have done over quite a considerable time.
If there has been so much concern in Germany over the use of biodiesel why are Volkswagen prepared to offer full warrenty even on B100 (100% biodiesel) usage. (See Wikipedia link above).
I would be intrested to know of your source of information regarding the use of biodiesel in the USA as from various articles I have read there would appear to be a growth in production.
Although I can't make proper sense of your comments regarding chipshop's, I would like to point out the original reference was made by you. If you are attempting to suggest the a diesel engine will not run on WVO (waste vegtable oil) then I am sorry but you know less about this subject than even I thought. Although using WVO presents general usage problems once warm and especialy if the oil is preheated an engine will run very well on it.
As to your comments about the breakdown of sugers, I can not understand where these sugers have come from. Biodiesel is what is refered to as a FAME Fatty Acid Methyl Ester. See here.
http://en.wikipedia.org/wiki/Fatty_acid_methyl_ester
I admit that I am not a chemist but I can't say that I have come across a prosses that spontainiously converts fatty acids in to sugers.
I find the subject of biodiesel/alternative fuels an interesting one and do read up on it. I am always willing to listen to alternative points of view but consider supportive evidence to be essential as I do find there is an awfull lot of myth and unsubstanciated claims made.
These sites usually have some reasonable forum threads going on the subject.
http://www.sbmcc.co.uk/ UK site.
http://www.gm-diesel.com/ USA site.
I would like to finish by stateing that this post is made purely to inform, not to attack anybody or to be offensive, It redresses statements I believe to be incorrect and hopefully supplys the evidence that backs up my views.
I do and have here, challenged statements that are made, this should not be seen as a personal attack on those that have made the statement.