Since the introduction of Amsoil Synthetic Motor Oil in 1972, Amsoil has gone on to develop the most complete line of synthetic lubricants and automotive products in the world. The history of Amsoil product innovations is a checklist of industry firsts. They were the first to develop an API-rated 100 percent synthetic motor oil. They were the first to manufacture synthetic gear lube for automotive use. They were the first to produce synthetic motor oils for diesel engines, racing engines, turbo and marine engines!

All Amsoil Synthetic Motor Oils dramatically outperform conventional petroleum motor oils. They reduce friction, heat and wear for maximum power, performance and fuel efficiency. Resistant to high temperature burn-off, chemical breakdown and sludging, they keep engines running longer and cleaner. Amsoil motor oil provides low temperature fluidity for fast, dependable winter starts and immediate start-up protection. It exceeds the most demanding world-wide performance standards and meet warranty requirements for all domestic and imported passenger car engines, both super/turbo-charged and non-super/turbo-charged.

NOACK Volatility

The NOACK Volatility Test determines the evaporation loss of lubricants in high-temperature service. The more motor oils vaporize, the thicker and heavier they become, contributing to poor circulation, reduced fuel economy, increased oil consumption and excessive wear and emissions. A maximum of 15 percent evaporation loss is allowable to meet the API SL and ILSAC GF-3 specifications. As shown in the graph, AMSOIL 5W-30 Synthetic Motor Oil lost an extremely low 4.9 percent of its original weight during high-temperature service, maintaining its superior protective and performance qualities,while Mobil 1 SuperSyn 5W-30 Motor Oil lost 9.17 percent of its original weight.

Four Ball Wear

The Four Ball Wear Test determines the wear protection properties of a lubricant by measuring the wear scars produced by four metal balls in sliding contact under the test parameters. The smaller the average wear scar, the better the wear protection provided by the lubricant. As shown in the graph, AMSOIL 5W-30 Synthetic Motor Oil completed the Four Ball Wear Test producing a smaller wear scar than the Mobil 1 SuperSyn 5W-30 Motor Oil.

Flash/Fire Point

The Flash/Fire Point Test determines the lowest temperatures at which application of a flame will cause lubricant vapors to ignite (flash point) and sustain burning for five seconds (fire point). Lubricants with higher flash and fire points exhibit more stable volatility characteristics and are safer to use and transport. As shown in the graph, AMSOIL 5W-30 Synthetic Motor Oil has higher flash and fire points than does Mobil 1 SuperSyn 5W-30 Motor Oil.

Pour Point

The Pour Point Test determines the lowest temperature at which a lubricant flows.The lower a lubricant’s pour point,the better protection it provides in low-temperature service.As shown in the graph, AMSOIL 5W-30 Synthetic Motor Oil has a lower pour point than Mobil 1 SuperSyn 5W-30 Motor Oil.

Total Base Number

Total Base Number (TBN) is the measurement of a lubricant’s reserve alkalinity. The higher a motor oil’s TBN, the more effective it is in handling contaminants and reducing the corrosive effects of acids for an extended period of time. As shown in the graph, AMSOIL 5W-30 Synthetic Motor Oil has a higher TBN than Mobil 1 SuperSyn 5W-30 Motor Oil.