The effects of adding DEE to JME as well as heating up the JME
to reduce its viscosity are shown in Fig. 3. The viscosity of the used
diesel oil is given also for reference. The JME has been heated from
25 C (atmospheric conditions) to 40 C, 55 C, and 70 C, and the
dynamic viscosity has been measured. It may be seen from the figure
that heating the JME from 25 to 70 C decreased its viscosity
from about 16.6 cP to about 4.59 cP. It has been then become within
the acceptable range for diesel engine fuels. The highest temperature
used (70 C) is easily achievable from the vehicle systems,
e.g. the water heating system or exhaust system, etc.