Car is 2001 Audi A4 2.8L V6 with 79900 miles. Oil was GC Gold 0W30.
Changed the oil today and oil had about 7450 miles on it. I did take a sample, but am debating whether to mail it in. I don't plan on extending beyond 7500 miles, so I am not going to get a TBN.
I don't plan on keeping the car beyond 100,000 miles because I plan to get the 2.0T in about a year or so.
So, is it worth it to get the $20 blackstone deal?