Dura Lube Engine Treatment 32 oz is an advanced engine technology with SR3. Dura Lube Engine Treatment is precision blended to reduce friction and heat when added to any vehicle type including gas diesel and hybrid engines. Dura Lube Engine Treatment works with all types of lubricants and oils including synthetics and conventional and semi-synthetic blends. It contains no solid materials so it will NOT clog filters. This product protects vital parts from wear adding a second layer of lubrication. Works with 10W-30/40 5W-30/20 0W-20 and mono-grade engine oils and other common viscosity grades for automotive motor oil. Works great in compact cars sedans SUVs vans light pickup trucks and heavy-duty vehicles. Vehicle Fitment Type: Universal