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They say nothing outperforms Mobil 1, but Amsoil synthetic oil just did, and they have the results to prove it.

 

 

The Noack Volatility shows Mobil 1 evaporates more than Amsoil, almost 2 to 1. This keeps Amsoil performing at peak performance. The oil changes less under stress.

 

 

The 4 ball wear test uses pressure to wear a scar into a ball. The smaller the scar, the better. Amsoil wins again.

 

 

Amsoil has a higher flash and fire point than Mobil 1 does.

 

 

The pour point represents the temperature where an oil is too thick to pour. Amsoil pours at a lower temperature than Mobil 1.

 

 

The total base number is a measurement of how well an oil can resist acids from combustion.