Preserve Your Engine’s Horsepower

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San Pedro, CA | (310) 292-5876

Keep your engine power and efficiency

at peak performance with AMSOIL

AMSOIL, protecting your engine and your wallet.

Help Preserve Your Engine’s Horsepower

Although you may equate engine wear and deposits with sudden, catastrophic engine failure, they are more likely to erode engine power and efficiency over time. Here’s how it works and what you can do about it.

Several factors cause an engine to slowly lose power, but one of the primary reasons includes compression loss due to wear and deposits.

Engine compression = power

For your engine to produce maximum power, the combustion chamber must seal completely during the compression and combustion strokes. Wear and deposits can prevent the valves or piston rings from sealing, allowing pressurized gases to escape the combustion chamber and take potential engine power with them.

To illustrate, imagine using a hydraulic floor jack. Pumping the handle will raise the vehicle as long as the release valve is tightly seated and doesn’t leak. A poorly sealed release valve, however, allows pressure to escape, causing the vehicle to sink to the ground no matter how much you pump the jack handle.

The same principle applies inside your engine. If some of the pressure created during the compression and combustion strokes is lost due to valves and piston rings that don’t seal completely, the engine will create less power.

Wear & deposits reduce compression

Over time, deposits or valve wear can prevent the valves from closing completely, interfering with a good seal. Wear can also interfere with proper valve operation, disrupting optimum fuel/air flow.

Worn or stuck piston rings produce the same effect. The rings are designed to move freely in their grooves and press tightly against the cylinder wall, forming a seal that prevents fuel/air from escaping. Ring wear can interfere with formation of a tight seal, while deposit buildup can cause the rings to stick in their grooves, also preventing a good seal. As a result, some fuel/air escapes the combustion chamber during compression, reducing power. On the combustion stroke, pressurized gases can blow by the rings and travel down the cylinder wall and into the oil sump, taking potential power with them. This is what’s meant when someone says an engine has lost compression.

Perfect Pairing: Signature Series Motor Oil and Ea Oil Filters

Combining premium motor oil with a premium oil filter is necessary for total engine protection.

Complete engine protection is a team sport. The long-term effectiveness of a quality motor oil is often hindered by poor filtration. At the same time, the superior capabilities of a premium oil filter remain unrealized when combined with a sub-par motor oil. A pairing of top-quality oil and filtration is required for best results, especially with the advanced technology found in modern vehicles.

Tag Team Protection

Working in tandem, AMSOIL Signature Series Motor Oil and AMSOIL Ea Oil Filters provide complete engine protection. Signature Series Motor Oil withstands the rigors of extreme heat and resists deposits and sludge, while Ea Oil Filters provide the capacity and efficiency that today’s advanced engine components require.

AMSOIL Signature Series helps prevent the problem

AMSOIL Signature Series Synthetic Motor Oil provides 75 percent 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. In addition, it prevents piston deposits 93 percent better than required to meet the latest API standard.* Its outstanding performance helps prevent deposits and wear that rob engines of horsepower, helping preserve that like-new feeling you crave when driving.

Check Out These Great AMSOIL Products!

Signature Series 5W-30 Synthetic Motor Oil

AMSOIL Signature Series Synthetic Motor Oil is engineered to outperform conventional and synthetic motor oils. It combines industry-premier synthetic technology with AMSOIL premium additives in a unique formulation that exceeds the higher performance demands of modern engines.

Signature Series Multi-Vehicle Synthetic Automatic Transmission Fluid

AMSOIL Signature Series Multi-Vehicle Synthetic ATF is engineered to outperform conventional automatic transmission fluids and exceed the performance requirements of most North American, European and Asian vehicles.

AMSOIL Ea Oil Filters

AMSOIL Ea® Oil Filters (EAO, EA15K) feature advanced full-synthetic media that traps and holds a greater amount of small, wear-causing contaminants compared to conventional filters. They provide extended service intervals for increased convenience, while helping reduce engine wear.

More AMSOIL Products

You can be confident that using AMSOIL synthetic lubricants or practicing extended drain intervals does not void your new vehicle or equipment manufacturer’s warranty. In addition, all AMSOIL lubricants and filters are covered by the AMSOIL Limited Warranty.