Dear Sir,
With reference to your article headed Diesel Fuel Problem.I feel that the information given in the article could cause some motorists to go to unnecessary expense in purchasing fuel additives which may be effective on only one or two nights in the year.
The U.K. has a specification for diesel fuel sold between November and Narch where the minimum cold filter plugging point (CFPP) is -15º centigrade. All the major oil companies market a fuel which exceeds this requirement by some margin, however these specifications are met in part by the use of very expensive additives and in the competitive world of the supermarket they may only add sufficient to meet the specification, not exceed it.
A further problem with using an additive is that it does not remove wax once it has formed and must be mixed with the fuel before waxing takes place, ie when the tank is filled. In our unpredictable climate this would require that every fill would need additive to ensure 100% protection.
Another common cause of problems with fueling in this country is the fuel filters themselves which need to be regularly changed to ensure they are not partially clogged before encountering the minute crystals which may occur in the fuel or holding small quantities of water which will freeze long before the fuel.
The best advice you will receive from any organisation is to have your vehicle regularly serviced and use a quality fuel.
Hope this is helpful to your readers
John Snowball
