Cory ,I just put a pf24 ac filter on and put in 15-40 and and can of stp oil treatment in. The oil pressure did come up a bit at idle.I was looking for that but this winter I'll go back to 10-40. Ron
69 RA III T/A Auto 69 Sprint vert 3speed ( sold to a new home) 69 350 coupe ( new home in Denver) 69 350 HO 4spd