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SEE TEST DETAILS
Signature Series 5W-30 Synthetic Motor Oil protects against harmful deposits on turbochargers 4X better than Mobil 1 Extended Performance and 3.6X better than Royal Purple in industry-standard testing.
AMSOIL #1 UNDER STRESS
Las Vegas Taxi Cab Field Study: Excessive idling and stop-and-go driving in such heat create the ideal conditions for lubricant failure, sludge formation and catastrophic component failure. See how AMSOIL beat the competition and stood up to these conditions.
AMSOIL synthetic lubricants contain no contaminants or molecules that don’t serve a designed purpose. They provide better friction-reduction, optimum fuel efficiency, maximum film strength and extreme-temperature performance conventional lubricants just can’t touch.