High-Viscosity Oil for Classic Cars, Older Vehicles, RVs – Ideal for High Mileage Cars
High Zinc and Phosphorus ZDDP Motor Oil for Engines with Flat Tappet Cams
AMSOIL Premium Protection Full Synthetic Engine Oils (Product Codes: AMO, ARO), available in 10w40 and 20w50 viscosity grades, are specially formulated for use in both gasoline and diesel engines, offering multi-functionality and excellent wear protection. Their unique combination of synthetic base stocks and a superior additive package results in a formulation that exceeds the requirements of most gasoline or diesel applications that call for 10w40 or 20w50 motor oil.
AMSOIL Premium Protection Synthetic 10w40 and 20w50 Engine Oils are ideal for applications where the extra protection of a high-viscosity oil is desired, such as in RVs, older cars and other classic vehicles, as well as most types of modern equipment. They are also compatible for use in some motorcycles. They are the ideal oil for high-mileage cars, vehicles with flat tappet cams and high-stress vehicles subject to hot temperatures, heavy hauling, trailer pulling or off-road use.
AMSOIL Premium Protection Full Synthetic 10w40 and 20w50 Engine Oils contain high levels of zinc and phosphorus (ZDDP), providing the extra anti-wear protection required by engines with flat-tappet cams and high-tension valve springs. They resist oxidation, neutralize acids, inhibit corrosion and protect against engine deposits, offering performance beyond conventional oil for convenience and trouble-free operation. Their superior high TBN (12+) synthetic formulation provides extended oil change intervals and maximum protection against engine wear. The higher viscosity of AMSOIL Premium Protection 20w50 Engine Oil may help reduce motor oil consumption in equipment experiencing higher than normal oil usage rates while running lower viscosity lubricants.
- High-viscosity oil
- High-ZDDP motor oil – contains high levels of zinc and phosphorus
- Resists engine deposit formation
- Reduces engine wear
- Superior high-temperature oil
- Excellent cold-temperature oil for faster, easier cold-weather starts
- Retains its viscosity for longer oil change intervals
- High TBN (12+) ensures lasting protection against acid and soot