Originally Posted By: pickled
What are you using for a filter? ... Your iron was about 2ppm/1000 miles so it would be interesting to know what interval Blackstone's universal averages are based on (3,000 or 5,000 miles?) to compare this rate to.
Yes, what filter are you running?
IIRC, Blackstone Subaru 2.5L universal averages are based on 4,400 miles. The averages are the same regardless if it's a 2.5 turbo or 2.5 n/a.
-Dennis