Dear sir @Xulfiqar
I am sharing an observation with you and want to know if its just my car or it is normal with other cars too. Btw i have tested it multiple times not one or 2 times.
Whenever my car fuel tank goes below the half mark the car feels more agile and light to throttle response. It wants to float or glide on very light throttle in city drive especially. The more its goes towards the E mark the more the agility FEEL increases. After refuelling to full there is no such fun and car drives as normal. I ll not call it laggy but it is not that extra agile.
PS Car is a 10 years old 1.3 pkdm corolla gli and running perfectly ma sha Allah. It is on oem filters and throughout periodically maintained by 3s. I am using 5w30 fully synthetic havoline in it. Car odo is 150k km. It returns good fuel average. 80% of the miles on odo are highway miles.
Please enlighten me.