had an oil leak on the oil pan and figured to fix it and check out the pick up tube. While i had the oil pan off i didn't see any sludge or anything that would point to a clog. the pick up tube was clean (from what i could tell). I tried to remove the tube but the allen screws holding it on were on to tight i didn't want to risk breaking them. Not sure what else to look for at this point besides to let it die a slooooow death.
2004 forenza (wife's car)
1996 Jeep Cherokee (mine)