The key to
running a Diesel Engine on vegetable oil is to reduce the viscosity of the
oil using a Heated Oil Conversion. The higher the temperature the thinner the vegetable oil becomes.
Using cold vegetable oil without further modification, although the engine might
run, would cause high emissions and possible engine damage, this is not recommended. So the oil must be heated to
70 deg C or higher,
giving it a fuel viscosity of around 10 centistokes (kinematic viscosity
measurement), making it reliable for use in most
manufacturers specify 10 or 15 centistokes. In winter Diesel fuel thickens and
makes starting difficult. Luckily it looks like harsh winters are a thing of the
past. Fitting one of our Heated Oil Kits eliminates this problem by preheating the cold
Diesel or vegetable oil to 10 centistokes before it enters the combustion
chamber. Making starting easier and reducing all that smoke, which is, wasted
unused fuel that we see coming from Diesel’s on cold days.
running on vegetable oil which has been heated to around
70 deg C will have
the similar injector coking and better engine wear as it would have running on normal
diesel, with significantly lower less toxic emissions.
different companies including us at DieselVeg have explored the modifications
needed, and our kits indeed exceed this.
Oil is heated using circulating coolant water through a heat exchanger
and an electrical Diesel-Therm
heater within the engine bay to required temperature then a
cockpit switch is operated to changeover once up to temperature,
or auto switch via temperature sensor with new controller. Other benefits include no loss of power,
a cleaner exhaust, a better lubricated engine, and cleaner fuel emission. About
2 minutes before you get to your destination, switch back to diesel to clear the
injection pump and fuel lines of vegetable oil. If you forget
then a buzzer will sound for two seconds when you switch your engine off, if
this happens simply re-start, switch to diesel and run for 2 mins.
Oil-Kit solenoid / Diesel-Therm
ATG Heat exchanger WT01
This Kit is available as DIY or
fitted at our workshop
Against: Veg oil tank may need small amount of diesel added to reduce
viscosity in cold months. HOWEVER IN OUR EXPERIENCE
DURING THE LAST SIX WINTERS WE HAVE NOT HAD TO DO THIS.
Veg oil will always be available even
when fuel is in short supply, remember the recent fuel crisis?
kit is available in 12 and 24 volt models
& 8mm (cars, vans), 10mm (Large cars, vans, lorries), 13mm (large commercials)
internal diameter fuel line & switching systems and comes
supplied for DIY with detailed installation instructions:
Diesel-Therm continuous-flow heater
temperature switch (regulates the
3-way solenoid valve (switching
3-way solenoid valve (venting)
New control system
cable set with connectors and
fuse box with 16 A fuse
12 - 91 Ltr., 0,3 bar pressure checked, air vent, constructed of Eltex,
- 12v-8mm kit (P120811)
for vehicles that have a 08mm fuel feed and return more than
18mpg (fuel consumption to
15 Ltr/100 km) plus 22L start
up Diesel tank (SE2009) and
This is our most common kit/tank combination for most cars and vans.
Vehicles with 24 v systems, larger fuel and or return lines or less
than 18mpg see ATG
KIT001 kit and 22L tank combination.
VAT inclusive, with free new controller
& "still switched to veg alarm" Includes 22 litre
start-up diesel tank & straps (veg oil goes in original tank so no loss of