P.I. stands for Performance Improver. There are a lot of products on the market that claim to improve performance, but few that actually deliver. Amsoil P.I. delivers on the promise by cleaning your vehicle's fuel system of deposits that are the normal result of fuel combustion. These fuel deposits degrade engine performance in the following ways:

Amsoil has introduced a new 0W-20 synthetic motor oil (ASM). More and more auto manufacturers are calling for a 20-weight oil. ASM is recommended for Honda, Acura, DaimlerChrysler, Toyota, Ford and all other applications where SAE 0W-20 or 5W-20 is required. ASM has the same drain interval recommendation as AMSOIL 5W-30 (ASL) and 10W- 30 (ATM), which is 25,000 miles or one year, whichever comes first under normal operation or 15,000 miles or one year, which ever comes first under severe service. Remember to use an AMSOIL Absolute Efficiency Oil Filter to match the filter performance with the oil and enable you to enjoy a 12- month or 25000 mile change interval.

While AMSOIL 0W-20 is unmatched by competitive oils on the market, AMSOIL does not recommend using 0W-20 where 30 grade oils are recommended by the vehicle manufacturer. 0W-20 is a lower viscosity oil that provides fuel economy benefits. Viscosity is a critical feature of lubrication. The OEMs have determined in which vehicles a lower viscosity oil is the optimal choice, and where either a 0W-20 or 5W- 20 oil is recommended.

Sometimes motorists are concerned about using a low viscosity oil. AMSOIL, however, engineered ASM specifically for maximum viscosity protection. ASM is shear stable. It will not break down, and it contains high quality additives to provide extra protection.

The fourth vehicle in the Florida Synthetics fleet is a 1999 Dodge Durango. It a 5.2L V8 with 115,000 miles on the clock. I bought it two years ago as a tow vehicle for my Spec Miata racecar that I was racing in SCCA regional competition. I wanted something that could tow a car trailer and also keep my gear dry and protected at the track. An SUV with a V8 was just the ticket. Even though the engine has quite a few miles on it, it doesn't burn a drop of oil. I switched it to Amsoil ASL 5W-30 soon after I bought it, at about 105,000 miles. The smoothness of the engine with the ASL is amazing. I only put about 7500 miles per year on this vehicle, so I change the oil every 12 months, along with an EaO filter. The freedom from worrying about oil changes every 3 or 4 months is liberating and allows me to pay attention to other things to maintain this higher-mileage vehicle. I also use an EaA air filter, after removing the K&N filter the previous owner had installed. Now that I'm taking a break from racing, I'll probably pass this vehicle along to the next owner, and I hope that person will continue using Amsoil in it, as I think this engine will go another 100,000 miles with it.