"...I use Castrol GTX...and a PH25 Fram filter.
His Fram was not one of the "racing" filters. It's the PF-25 you can buy for $4.
http://www.jegs.com/i/Fram/410/PH25/10002/-1
Somehow, I don't think the big boys would use one of the $4 Fram filters.
But, for those who like 'em, they're cheap & readily available.