One problem related to crankcase (pcv) has been reported for the 1998 Saturn SL1. The most recently reported issues are listed below.
I check my car weekly. With no warning or tell tale signs, I found water in the crankcase and oil in the radiator. I had the car towed to my mechanic and he claims I have either a blown head gasket or a cracked engine head with estimated repairs in excess of $2, 000. 00. I called the dealership and was told the car has a warranty of 36,000 miles or 3 years and I am out of warranty due to time.