Detroit Diesel 8 V 92 coolant in oil pan.

Sorry, made a mistake, you're right, there's 4 exhaust valves, not 2 and 2, but I still say a blower/supercharger is an air compressor and the faster the engine turns the more air it compresses, therefore higher pressure and greater volume.

To increase the HP, DD added a turbocharger on top of the blower on the 71 series to increase power, but i remember there were limitations where the 92's were concerned.

To increase power again, (on the 92's, near the end), they created the bypass blower because the blower was hindering the boost of the turbo, blower could not compress that volume of air, robbed the engine of potential power so they diverted the air around it.

Not trying to be a smarty, have memory issues due to age, too many concussions, heavy chemo drugs, near death by cancer a while back, the old noodle ain't what it used to be, but I'm always willing to learn, or re-learn, or converse., it's all good.

 

A supercharger provides boost. There are 3 types of superchargers, centrifugal, roots type and turbo. In 2 stroke operation, the roots blower does not provide boost, no matter how fast it's spinning. It simply pushes the exhaust out and replaces it with fresh air.

 

Have you ever seen the liner out of a 53, 71 or 92 series motor? Explain to me what those big square holes are for all the way around the bottom. The only valves they have are exhaust

 

You can have the pan off and have a look inside in less than an hour....

 

Check the Oil Cooler. Most likely it is leaking internally (cracked core). If the Oil Cooler core cracks, oil will be forced into the cooling system when the engine is running (not your case since engine was not running) , and coolant will leak into the oil system when engine is not running.

92 Series Cooling system flow

 

That makes sense. The oil cooler is at the bottom of the coolant flow so if the oil cooler is cracked gravity will let the coolant flow downhill into the oil passage and the pan.

This cooler drawing shows the flow of coolant (into the top of housing, around oil cooler core, and then into block). If the cooler core is cracked/blown the coolant will run straight through it in to the oil passages and into the pan. Note that there are several different configurations of oil coolers but they all fail the same way if the core cracks.

Oil Cooler details by