Ever since using e10 fuel at asda about 10 days ago my car feels like it has lost some of the acceleration power when putting my foot to the floor in my 2014 1.8 tsfi, i put in £15 before i noticed it was e10 on the fuel pump, i thought this wasn’t coming in till september so wasn’t even something i thought of before i started filling up ? I usually fill up at costco which is still e5 petrol but after filling up with £50 e5 95 ron from costco a few days later i still feel like the car is a bit slower than it usually is, could the e10 fuel be the cause of this ? The only other thing i have done is topped up the oil with 500ml of castrol to get it slighty above the half way mark before a 4 hour round trip which was same day i filled up with £50 e5 95 from costco