Here are the results from my second oil change at 5675 miles. My first oil change was at 1000 miles. I use Motorcraft 5W-20 semi-synthetic oil and motorcraft oil filter. I get the 5 quart container and filter for $23.00. So far, my engine looks pretty good even though I drive it like I stole it.. I'm going to change my oil evert 5000 miles. Blackstone charges $25.00 for the analysis. shipping the oil cost about $2.60
