Question Asked: My 2001 Saturn L300, 3.0 v6 throws out a puff of blue smoke on start up.
April 06, 2013, 06:09 AM
I recently bought a 2001 Saturn L300 with 80,000 miles on it. I started it cold 3 times over a two day period b4 I bought it and it did not smoke one bit. The oil was in terrible shape but never smoked on start up or otherwise until I switched to synthetic. I ignored the old wives tale to not change over to synthetic oil in a vehicle that is several years old if you are not sure if conventional oil was the only oil that was ever used. Well I ran the car for two weeks then changed the oil to Valvoline straight synthetic 5w 30 . Within a week or two I had a puff of bluish smoke that seemed to get worse on every startup. I changed the oil at 2200 miles and it was filthy which tells me that the synthetic oil cleaned the hell out of my motor inside. I switched to high mileage Valvoline blend also a 5w 30. It is still smoking after 300 miles. I tried to aftermarket fixes with both oil changes. One was Engine Restore. The other was made by Wynns. Still smoking on startup. A longtime friend and retired mechanic recommended putting a little brake fluid in with the oil. After reading up on that potential horror show I decided not to try that. I also have read some online forums where Saturn owners have replaced the valve seals and still had this problem. WTF??????? I am considering going to a 10w 40 conventional oil and then thicker next time if I have to but living in New Hampshire I wont be able to in the winter. Any ideas other than what I have already tried? Thanks for listening. Ed from NH
Question Answered: valve seals
April 06, 2013, 05:42 PM
If the seals are still leaking then the valve guides could be worn.