Hey there fellow pakwheels
Yesterday i happened to get my car's oil changed from caltex havoline 10w30 to havoline fully synthetic 5w40 and these are the first things i noticed:
Cold startup was markedly better.
Engine got to optimum temperature quickly.
Drive was much smooth.
These are just the observations on Day1 of pouring caltex fully synthetic...Will update about the mileage and any other changes i find after pouring this oil
Btw my car is a civic 8th gen prosmatic 08 with 77k on the odo..