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  • Important information for diesel owners
  • Home based business opportunity
  • 5W/20 Controversy
  • Do synthetics cause leaks?
  • Foreign accounts (FOB US Freight Forwarder - Qualifies as commercial account)
  • Types of Amsoil Accounts
    Preferred Customers Amsoil Dealer Retail/Commercial Quick Lube

    Shelby Synthetics

    Restore Power and Performance with Newly Reformulated AMSOIL P.I. Gasoline Additive

    Newly reformulated AMSOIL P.I. (Performance Improver) provides unsurpassed fuel economy and performance. Today’s fuels vary in quality and additive treat levels. Although a certain level of detergent additive is required by law to be formulated into gasoline, cost restrictions cause refineries to use low quality additives in the lowest additive concentration (LAC), a level insufficient to prevent deposit accumulation. As a result, deposits accumulate on fuel injectors, intake valves and combustion chambers, often within just a few thousand miles, disrupting spray patterns, affecting electronic sensors and causing a multitude of problems.

    This information last updated 2007-05-01

  • Dramatic reductions in mechanical wear!
  • Lasts 5 to 10 times longer in service
  • Wide operational temperature range
  • Cooler running
  • Environmentally preferred
  • Improvements in fuel economy of 8% or better
  • The only warranted 25,000/35,000 mile oil drain interval in the industry!
  • Clean running
  • The leader in the industry!
  • Interesting Articles
    Amsoil continues to outperform Mobil 1
    Article from Lubes and Greases magazine

    A Brief History of Amsoil Since the introduction of AMSOIL synthetic motor oil in 1972, AMSOIL has gone on to develop the most complete line of synthetic lubricants and automotive products in the world. The history of AMSOIL product innovations is a checklist of industry firsts. AMSOIL "firsts" in motor oil, two-cycle oil, gear lube, grease, air filter and oil filter technology are proof-positive of the AMSOIL commitment to innovation. Read More

    Common Questions
    What is synthetic oil?
    Will AMSOIL Motor Oils void the warranty of a new vehicle?
    Should Oil Additives or After Market Products be added to AMSOIL Motor Oils?
    More Questions

    About Our Dealership ShelbySynthetics.com is an independent Amsoil dealership located in Shelby Township MI and headed by lubrication specialist Scott Keen. Scott is Amsoil T-1 certified and has spent over the last 10 years in the automotive industry. As a machine repairman Scott has seen first hand, the vital importance of proper lubrication under the harshest environments. As a PowerSports enthusiast Scott relies on Amsoil products to keep his machines and tow vehicles running at their optimum performance levels.
    Scott Keen is available for and welcomes questions.