Have oil pooling on the top of oil pan ( in the little valley near middle and in the oil dipstick mounting well). It is definitely being slung by the crank pulley. Don't see anything dripping down from top of engine. It had oil cooler seals in 2012. New to this engine and may be overthinking this but seems like front crank seal, right? If so, anyone done this ? What is torque spec on crank bolt?

Replaced these on my old 601s and 616s but they had many more miles than the 136k on this R320.

Thanks!

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