Gallon jug of vintage "Wakefield" Castrol 20w-50 XL oil. 800 PPM ZDDP. API grade SE-C. Useful for engines that are sensitive to modern additives and detergents, but need the ZDDP protection that standard detergent free oils lack. We stock this oil for many of the pre-war vehicles, as well as for many gearboxes with brass interenals that cannot use modern oils.
 
Also available in straight 30w.