[sumpcracker]

I have just filled up with Sainsburys City Diesel, fuel consumption has gone from 37 MPG (Tesco) to 45 mpg, i have tested this over 2 weeks, is there a better Diesel fuel?

 

[leeds]

I think so, because filled up my missus car (astra)before at( tesco) 4 gallons which is last at 122 miles

. then at (sainsbury) same 4 gallons 208 miles