Tried 5w-20 no fuel improvements

[goodoleboy]

I switched from 5w20 for 4500 miles with gains i could see in fuel economy. 28 mpg average

So i went to mobil 1 and now i am getting 2 mpg better. with M1 i am getting 30-31 mpg..

 

[crashz]

What vehicle? Miles on the car/truck?

 

[2K2AcuraTL]

Which M1 weight did you swtich too..??

 

[Eddie]

Useless statement without more information like from what oil to what oil (type and viscosity). Back to back runs? How many miles of each for comarison. Highway or city or both. etc etc. Give us more data.