Royal Purple has been run since about 24,000 miles or so on the car. Before switching to Royal Purple, it was Motorcraft Syn-Blend. Always used Motorcraft FL820S filters. Roush "K&N" filter. Total miles on the car now is about 42,300.
This was the last oil change with Royal Purple. Quite a few short trips (moving it in the driveway, was noted on Blackstone form), and a bit dirtier filter (also noted). Car is driven the way it is intended to be when I do take it out, and Blackstone guessed right, lol.
Sample was taken about 5 minutes after a 25-30 mile drive. The oil and filter were on the car for about 9 months as well.
Not sure what other information would be of help...
This was the last oil change with Royal Purple. Quite a few short trips (moving it in the driveway, was noted on Blackstone form), and a bit dirtier filter (also noted). Car is driven the way it is intended to be when I do take it out, and Blackstone guessed right, lol.
Sample was taken about 5 minutes after a 25-30 mile drive. The oil and filter were on the car for about 9 months as well.
Not sure what other information would be of help...