Oil = Bad gas mileage?

[merc123]

Recently my vehicle hit the 75k mark. I switched from 50/50 mix Valvoline Full Synthetic 5w30 with Valvoline Durablend 5w30 to the new Max Life. Now I have noticed a decrease in gas mileage. Could it be from the oil? The fuel filter is only about 7000 miles old.

 

[DBMSTNG]

what's the weight of the Max Life?


you could always try Amsoil.

 

[claytucc3]

I would use amsoil or Mobil 1