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  1. Stanadyne Fuel Additive

    Alternative Fuels Diesel Additives Lubricants
    I was told by a GM shop that Stanadyne was the only fuel treatmant approved by GM? Also, I tried a bottle of the red Stanadyne for U.L.S. diesel, and I swear I picked up 1.5 MPG's. Anybody else have this same experience? Thanks!
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