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Thank you for all the info in both your replies. We are having the head checked tomorrow. The block itself has some pitting, but nothing worse than a few microns . block is straight, head is straight. The gasket used, was the new style with the larger o-ring openings. Not sure why we did not...

First post here. Mechanic, new to work on Hino engines. Working on a J08 with oil in coolant issue. No coolant in oil, even after running for extended periods. Issue still present with coolant bypassing turbo. Pressure builds in radiator as if head gasket is issue. Initially resealed oil...