Just got my Blackstone report and they are recomennding extending out to 7500 miles and staying with M1. So much for me ever going back to 5-20.
Here's a link to my Mileage report with a link to the Blackstone PDF
Mileage & Oil report
Ray
Here's a link to my Mileage report with a link to the Blackstone PDF
Mileage & Oil report
Ray
