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Re: 'High Mileage' Oils for Older Vehicles; Benefit or Marketing?
Posted to Shop Management Forum on 2/8/2006 2 Replies

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There is an energy conserving rating and a catalyst compatability rating included in the ILSAC GF-4 umbrella standard. If you look at the "API donut", the energy conserving rating is included separatl... Login to read more.

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