After my last oil change I have noticed that my car bucks from like take off to around 2500 - 3000 rpms ... this happens in all gears ... fourth seems to be the least problematic ... basically the feeling is like you are taking your foot on and off the accelerator quickly ... making the car lunge ... also my oil pressure guage is a little on the High side ... more so than usual ... I checked the oil level it was fine and the oil cap was on good ... i don't know what to do!!
Kevin
Kevin