Signature Series Resists Breakdown
As motor oil ages, its ability to combat heat, oxidation and contamination becomes increasingly important. When oil breaks down, harmful deposits can form and threaten engine performance. That’s why AMSOIL Signature Series 100% Synthetic Motor Oil is engineered to resist breakdown, maintain cleanliness and deliver lasting protection over extended drain intervals.
To challenge its abilities to guard against sludge, Signature Series 5W-30 100% Synthetic Motor Oil was installed in a 2025 Ford* F-150 Raptor* equipped with a high-output V6 engine and run through a 125,000-mile (201,168-km) test. Oil changes were performed at 25,000-mile (40,234-km) intervals, and power sweeps were performed before and after the 125,000-mile test protocol.
See the October AMSOIL Magazine for more information and test results.
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