O Bhai, filter is about 1500 from Usman motors Montgomery road. I used to use genuine but not anymore because it doesn't make any difference. So I started to buy non OEM from filter house costing around 500 or 600.
Oil viscosity and grade matters a lot. Only go for 10w30 or recommended oil grade from Mitsubishi. I used to use liqui moli.
More information please? Plugs status, throttle service, injectors cleaned or not?
I can check your car. My office is in Shadman, if you wish to meat please let me know. I will certainly gladly take a peak and let you know as per my best experience.
Regards, Junaid
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