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"Diesel oils are for diesel engines which have totally different operating conditions than gasoline engines. Further, the EPA has mandated similar reductions in ZDDP for diesel oils and should not be used in a 911 engine."
Delo 400 LE 15-40 still has 1300 ppm zinc and 1200 ppm phosphorus. The Delo 400 SDE has been reduced to like 800 zinc, don't use it. You need a PHD in chemistry to figure out what oil to use these days.
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