Extended Protection for Those Who Demand the Best
AMSOIL synthetic lubricants are hand-crafted for those who live for peak performance and demand the best protection – so you can continue to enjoy your vehicles to the fullest.
AMSOIL Signature Series Synthetic Motor Oil delivers:
- 75% more engine protection against horsepower loss and wear than required by a leading industry standard*, extending the life of vital components like pistons and cams.
- A 92.5 percent better piston deposit score.*
- Oil thickening limited to 82 percent below the standard*
*As required by a leading industry standard. Based on independent testing of AMSOIL Signature Series 5W-30, in ASTM D7320 as required by API SN specification.