Excessive engine wear eventually leads to costly breakdowns and catastrophic engine failure. But even if your engine doesn’t fail, wear robs your vehicle of power, performance and that “like-new” feeling you crave when driving.
Modern engine parts are finely engineered to tight tolerances. This helps engines run more efficiently and last longer. Over time, however, wear causes bearings, pistons, piston rings and other parts to deviate from their original specifications. Bearings no longer run “true,” causing noise and heat. Worn piston rings and cylinders reduce the effectiveness of the dynamic seal that forms between the ring and cylinder wall, resulting in compression loss and increased oil consumption. Engines that lose compression produce less power.
Valve and camshaft wear are also a problem. Worn valve stems and cam lobes negatively affect valve timing and lift, which reduces efficiency and power. Variable valve timing (VVT) systems, common on most newer vehicles, contain intricate components that are especially prone to the ill effects of wear. VVT systems use oil-pressure-operated mechanical devices to change valve timing, duration and lift to achieve improved fuel economy and performance compared to traditional engines. Since most VVT systems are non-serviceable, wear can lead to costly problems down the road, in addition to poor performance.
To demonstrate its superior wear protection, AMSOIL Signature Series 5W-30 Synthetic Motor Oil was subjected to the 100-hour Sequence IIIG Engine Test (ASTM D 7320), an industry-standard test designed to evaluate motor oil in several key performance areas. It must be passed to meet the API SN and ILSAC GF-5 motor oil specifications.
AMSOIL instructed the lab that performed the test to double it to 200 hours. Signature Series not only passed the double-length test, it did so with flying colors. Its superior wear protection in the test, and because reducing wear has a direct correlation with reducing horsepower loss, allows AMSOIL to confidently claim Signature Series guards against wear and horsepower loss 75 percent better than required by a leading industry standard.
Upgrade to AMSOIL performance to protect your vehicle against wear and horsepower loss.
*Based on independent testing of AMSOIL Signature Series 5W-30 in ASTM D7320, as required by the API SN specification.
Here is the Sequence III tests. The results would be the same for all the Signature Series and the European line of products. 5W-20, 0W-20, 10W-30, 0W-30 included.