| Mobil_1_Product_Guide.pdf Mobil 1 10W-x0 Regular has 800PPM ZDDP Mobil 1 10W-x0 High Mileage has 1000PPM ZDDP Mobil 1 15W-50 Regular or EP has 1200PPM ZDDP The more ZDDP the better for our flat-top hydraulic valve lifters.
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