OK. Fuel injectors were removed... no fuel or motor oil was present in any of the injector wells prior to injector removal.

Injectors # 1-4 were unremarkable but the bottoms of injectors #5 and 6 and their corresponding heat shields were coated in motor oil.

Awaiting cylinder compression test. Anyone familiar with the location of the coolant and oil passage ways at the rear of the OM606 head?

What damage scenario would yield oil in cylinders 5 & 6? Are we dealing with both a cracked head and a blown gasket? Or could a head gasket compromised in 2 locations... i) cylinder-oil passage way and ii) cylinder-cylinder... account for this current finding?