Nice! I didn't earn quite as big a discount as you - did two oil changes yesterday.
Also finally made up my mind on synthetic vs conventional motor oil. Had switched over to synthetic a couple years ago for the newer vehicles, decided to stretch out the change intervals to 6 mos / 6k to 8k miles between changes and the cars haven't complained about it. The higher price differential (about $1 per qt) for fewer oil changes over time seems to be a fair trade. This time I'm trying the high mileage synthetic for another $1 per gallon to see what happens for the 2005 PT Cruiser ("Black Beauty") which has 130K and loses between a half or full quart between oil changes.
I have no loyalty to any brand of oil or filter. I just get whatever's on sale, especially if they throw in a free filter.
My colleague at work were talking cars, and I tried to figure out how many miles Mrs. Turk and I have driven.
155K - 79 Chevy Chevette - first car I bought
165K - 83 VW Rabbit (diesel) - first car Mrs. Turk bought
215K - 86 Chevy Nova - no, not that kind of Nova. Same thing as a Corolla or Geo Prism
205K - 93 Saturn SL1 - only new car we've ever bought
195K - 99 Ford Windstar - to haul all the young Turks
130K - 05 PT Cruiser (current)
167K - 08 Sienna (current)
43K - 14 Ford Escape (current)
1.275M total (approx). So giving a generous allowance for the kids, I'd say Mrs. Turk and I have each driven about 600K apiece.