Engine oil is a type of liquid oil used for lubrication by various types of internal combustion engines. While the main function is to lubricate moving parts, motor oil also cleans, inhibits corrosion, and cools the engine by carrying heat away from the moving parts. In engines, there is inevitably some exposure of the oil to products of internal combustion, and microscopic coke particles from black soot accumulate in the oil during operation. Also the rubbing of metal engine parts inevitably produces some microscopic metallic particles from the wearing of the surfaces. Such particles could circulate in the oil and grind against the part surfaces causing erosion and wear. The oil filter removes many of the particles, but eventually the oil filter becomes clogged. The motor oil and especially the additives also undergo thermal and mechanical degradation.
For these reasons, the oil and the oil filter need to be periodically replaced.

GRADES

SAE 5W-20
SAE 5W-20 is a premium, multi- grade oil, providing cold start protection with Exceptional Fuel Economy. SAE 5W-20 exceeds API service SM, SL, SJ and SH, as well as exceeding ILSAC GF-4/GF-3/GF-2 for API Certified Gasoline Engine Oils. Exceeds Ford Specifications WSS M2C153-H and WSS M2C930-A. Exceeds the service fill requirements of Ford, Honda and Chrysler where an SAE 5W-20 motor oil is specified. SAE 5W-20 should only be used in vehicles where SAE 5W-20 is recommended by manufacturer.

SAE 5W-30
SAE 5W-30 is a premium, super multi-grade that provides maximum cold weather engine protection and can help extend engine. SAE 5W-30 exceeds API service SM, SL, SJ and SH as well as exceeding all the requirements of ILSAC GF-4/GF-3/GF-2 for API Certified Gasoline Engine Oils and meets Energy Conserving Standards. Exceeds GM6094M and Ford WSS M2C929-A.

SAE 10W-30
SAE 10W-30 is a premium, super multi-grade that provides excellent fuel economy and can help extend engine life. SAE 10W-30 exceeds API Service SM, SL, SJ and SH as well as exceeding all the requirements of ILSAC GF-4/GF-3/GF-2 for API Certified Gasoline Engine Oils and meets Energy Conserving Standards. Exceeds GM6094M.

SAE 10W-40
SAE 10W-40 is a premium, super multi-grade that provides maximum protection in all seasons and can help extend engine life. SAE 10W-40 exceeds API service SL, SJ and SH as well as exceeding the engine protection requirements for API Certified Gasoline Engine Oils.

SAE 20W-50
SAE 20W-50 is a premium, super multi-grade that guards against wear by providing a superior oil film strength and extreme high temperature strength. 20W-50 exceeds API service SL, SJ and SH. Use SAE 20W-50 when ambient temperature is above 20° F.