Fuel Saving Tips
Using an engine block or coolant heater to pre-heat your engine will allow you to achieve maximum fuel economy much more quickly. Even in the summer, your engine starts out at about 120 degress below peak efficiency temperature. The benefits are especially large for diesels, as they tend to take much longer to heat up, due to their thermal efficiency. Tarbe
posted by Tarbe on March 5, 2009
this tip works for 90% of voting Fuelly members.