Information Related to Engines and Engine Oil

Testing proves AMSOIL Signature Series 5W-30 Synthetic Motor Oil provides more complete protection against damaging engine deposits than its competitors.

All motor oils will eventually oxidize to some extent. However, we can dramatically slow oxidation through use of synthetic base oils and quality oxidation-inhibitor additives.

Combining premium motor oil with a premium oil filter is necessary for total engine protection. AMSOIL provides both.

A potentially catastrophic problem is surfacing in today's engines. Here's how AMSOIL is working to solve it.

Properly functioning piston rings are vital to maximum engine power and efficiency.