98 Crown Vic Police Interceptor. Bought at auction w/98K miles, currently at 114K. Car came with complete records, oil changes done every 5K since new - no mention of brands used on receipts. Car does have an oil cooler. Car runs great, fast, but does like an extra quart every 1500 miles. No smoke. Oil cooler lines do leak, but not enough to ever land even a drop on the driveway. Engine looks shiny inside the oil cap area. Currently use the SuperTech filter and Quaker State 5-30 in the winter, 10-30 summer. Changes done every 3K. Located in the South. After reading these forums, it doesnt seem like the Quaker State is thought of all too highly. It certainly is priced higher than many. That said, I think next change I will try the 10-30 SuperTech Hi Mileage Synth Blend. It's $.50 cheaper, and probably at least as good, if not better oil. Basically, I dont want to spend more, and if I can get something better for less, I'm all for that. Even better if it can help with the consumption issue. I consider this car my beater, so I dont mind experiments. Does this sound ok?