Hello everyone, I have a question regarding oil comsumption on Saturns. I own a 99 SL w/the 1.9 sohc. I bought it last June with 12K miles on it. It has not burned any oil since I have owned it. I was changing the oil at 3k at Jiffy lube but am now changing it myself. It now has 25K and I have just switched to Mobil 1 5-30 and a Mobil 1 filter. My question: does the sohc engine burn oil also or is it just the dohc? I also have a 2000 Silverado 4X4, 5.3 with 36K and just switched that over to Mobil 1 0-30 and Mobil 1 filter. I have allways changed the oil in this myself. I was using Castrol GTX 5-30 and Fram filters with 2K change intervals. I am increasing the change interval with the Mobil 1 to 5k in both the Silverado and the Saturn. Thanks for the input!!