| Good info.
I live out in the boonies so I don't use Amsoil but I do believe in extended drains and I've had an oil analysis done on my last 3 new vehicles and 7500 miles was easy to do. Our Nissan Titan goes 13,000 between oil changes with Mobil1 extended and one of those reusable mesh screen filters per an oil analysis and only because the TBN becomes so low. |