coachgeo
Well-known member
Equipment
L225 w/woods Few Mowers & Back Blade, D722 in Motorcycle (Triumph Tiger), LMTV
Good report....
In the interest of giving a little clarity on this issue to those that may not be familiar with the subject of biodiesel vs straight D2, here is a short summary of the issue from the website link below. First the link to the website then the excerpt of the point of interest.
http://articles.extension.org/pages/26611/biodiesel-cloud-point-and-cold-weather-issues
The cloud point of soybean biodiesel is about 34°F (1°C), whereas the cloud point for No. 1 diesel is about - 40°F (-40°C) and for No. 2 diesel between -18°F (-28°C) and +20°F (-7°C). Usually, when biodiesel nears the cloud point temperature, changes must be made to the fuel, such as the addition of anti-gel additives or No. 1 diesel fuel, to prevent filters from clogging. However, it should be kept in mind that fuel additives recommended for diesel may not be effective for biodiesel. For more information about anti-gel additives and biodiesel, see Impact of additives on cold flow properties of biodiesel
Another potential solution is to add into the system a commercial Flat Plate Heat Exchanger (coolant to fuel) or a homemade one to warm the diesel. The colder the climate you live the more you need a pump at the tank that will pull a "gelled fuel" to the location in engine compartment where the coolant heat exchanger will warm the fuel and bring it to a viscosity the engine's IP and combustion chambers are happy with.