Fuel Saving Tips
Lighter engine oil for better mileage? or more power?
Not from my experience (as a master tech for over 40 years), and from extensive testing on dynamometer and road testing specific vehicles while testing results of 10w40 compared to 5w20 engine oils. No difference in HP or fuel economy whatsoever.
posted by billtech66 on October 5, 2016
this tip works for 59% of voting Fuelly members.
