Devoted to Protection

Oil Change

Keep the car you love safe with 75% more engine protection against horsepower loss and wear than required by a leading industry standard*

*Based on independent testing in the ASTM D6891 test using 0W-20 as worst-case representation.

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Amsoil beats mobil & Royal Purple in industry-standard testing


Signature series 5W-30 Synthetic motor oil protects against harmful deposits on turbocharges 4X better than Mobil 1 Extended performance and 3.6x better
than Royal Purple in industry standard testing.

Amsoil beats mobil & Royal Purple in industry-standard testing
Signature series 5W-30 Synthetic motor oil protects against harmful deposits on turbocharges 4X better
than Mobil 1 Extended performance and 3.6x better than Royal Purple in industry standard testing.As one of a few independently owned oil companies, we’ve always stood apart from the big oil companies.
We maintain the freedom to formulate products based on performance, not price. The result is a complete product line of full-synthetic lubricants that helps you push the limits of vehicle performance, power and speed

Amsoil beats mobil & Royal Purple in industry-standard testing
Signature series 5W-30 Synthetic motor oil protects against harmful deposits on turbocharges 4X better
than Mobil 1 Extended performance and 3.6x better than Royal Purple in industry standard testing.As one of a few independently owned oil companies, we’ve always stood apart from the big oil companies.
We maintain the freedom to formulate products based on performance, not price. The result is a complete product line of full-synthetic lubricants that helps you push the limits of vehicle performance, power and speed

Amsoil beats mobil & Royal Purple in industry-standard testing
Signature series 5W-30 Synthetic motor oil protects against harmful deposits on turbocharges 4X better
than Mobil 1 Extended performance and 3.6x better than Royal Purple in industry standard testing.As one of a few independently owned oil companies, we’ve always stood apart from the big oil companies.
We maintain the freedom to formulate products based on performance, not price. The result is a complete product line of full-synthetic lubricants that helps you push the limits of vehicle performance, power and speed

Amsoil beats mobil & Royal Purple in industry-standard testing
Signature series 5W-30 Synthetic motor oil protects against harmful deposits on turbocharges 4X better
than Mobil 1 Extended performance and 3.6x better than Royal Purple in industry standard testing.As one of a few independently owned oil companies, we’ve always stood apart from the big oil companies.
We maintain the freedom to formulate products based on performance, not price. The result is a complete product line of full-synthetic lubricants that helps you push the limits of vehicle performance, power and speed