Alright I won't lie I don't really no too much about cars. More than most but not as much as wish I knew. I checked my oil today and noticed that there was quit a bit of pressure built up (air pressure). I let all the air out and checked my oil, little low like always so added a little more, put dipstick back in and pulled it out right after and pressure had already built up. I did do this all with engine running. Please let me know if this is normal or if I should have it checked out before problem gets serious. Car is a 1998 Integra with LS/Vtec engine.

 

All that "air pressure" is from the positive crankcase ventilation system. You only check you oil when the motor is not running. HTH