Contour Enthusiasts Group Archives Forums Modifications Duratec Maintenance How long does synthetic oil last?

Originally posted by mr_froge:

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AMSOIL is the first 100% sythetic oil to receive the API certificate. The reason that no other AMSOIL products or anyother 100% synthetic have this certification is because of the formulation of their long extended drain interval products. I Quote: "As of July 1, 2002, AMSOIL INC. of Superior, Wisconsin, re-formulated its XL-7500 line of synthetic motor oils to meet API SL/ILSAC GF-3 certification standards with the use of Synthetic Group III base oils.

AMSOIL�??s exclusive additive chemistry and Group III base oil combination provides the quality and protection needed for 7500 mile drain intervals. The new formulation offers motorists improved protection of emissions control systems and extended service life. According to Alan Amatuzio, VP-Manufacturing, �??These API SL/GF-3 oils provide better high temperature deposit control and lower oil consumption than basic petroleum oils.�?�

Included in the AMSOIL XL-7500 motor oil line up is the 5W-20 viscosity grade, enabling oil change professionals to offer a high quality synthetic that meets the warranty requirements of Ford and Honda, the two current companies recommending this viscosity grade. This oil minimizes friction and provides superior wear protection throughout its extended service life of 7500 miles or six months, whichever comes first.

The new oils also cost less than previous XL-7500 products. The rest of the AMSOIL synthetic motor oil line continues to use PAO based oils in their formulations. XL-7500 is available in a full range of package sizes from quarts to drums in today�??s three leading viscosities, 5W-20, 5W-30 and 10W-30."

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Quote:

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"�??These API SL/GF-3 oils provide better high temperature deposit control and lower oil consumption than basic petroleum oils.�?�"

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