Lubrication qualities still dictated by ASTM specs.

Use search....tons written here; many reports attached etc.

For what it's worth, mine likes the Redline additive too. I use it beacuse it idles quieter. As little as 1% biodiesel does the same.

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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)