Recent content by ssf556

What about some Pre DEF oils....Amsoil makes a synthetic 15w40 and Lucas has a conventional 15w40. https://www.amsoil.com/p/amsoil-15w-40-heavy-duty-diesel-and-marine-oil-ame/ https://www.lucasoil.com/product/15w-40-magnum-high-tbn-ci-4-oil/