Nano Prime is Rislone's most advanced engine & oil additive ever - it's unlike anything else on the market, period. Perfect for new and older vehicles. Rislone gives the extra protection needed for today's lighter weight oils. This unique Rislone additive uses a fully-formulated GF-5/SN-rated synthetic motor oil carrier that is backwards-compatible with all vehicles. It contains a base synthetic oil to help improve mileage & performance while decreasing emissions. It is designed to work fully with all oil viscosity grades including OW-20, OW-30, 5W-20, 5W-30, 10W-30, 5W-40, 15W-40 and all others. This formula is enhanced with synthetic additives including Nano-tungsten and moly friction modifiers, anti-wear agents, extreme pressure additives plus Rislone's famous detergent and dispersant package.