- Location
- MilkyWay Galaxy
My oil pressure dropped from about 40 to 18 psi. Changed the STP oil filter, installed a K & N racing style filter (premium-like I normally use) and the pressure returned to 42 PSI. Filter must have been too dirty (had a lot miles on it). The pressure went back up with out touching the oil. Drained the oil later after confirming the oil pressure back to normal.