After may years, all the mechanical work is complete on my 57 Studebaker Hawk. Prior to running the AMSOIL AME 15W-40 Diesel (High zinc and detergent) I just switched to the AMO 10W-40 (High Zinc).. The car features a number of AMSOIL products from Severe Gear 75W-90 in the differential, the BMK-21 Bypass kit, the […]