Many years ago I had a pleasure boat that had a 8CM V8 engine. The engine had a very good marine conversion, when I would service the engine, oil change etc., the engine would hold five quarts of oil. The engine developed some problems so I decided to replace it with a newly rebuilt engine. The engine was removed from the boat, we noted that the engine did not have a normal Ford pan, much larger and deeper.
When the pan was removed we found what appeared to be a large 'blatter type of object laying in the bottom of the pan. The object was opaque in color.
Close examination of the object reveled that the object was sticky/oil like, semi fluid like
We finally figured out that the substance was most likely some type of oil additive, something like a Motor Honey/STP. It would appear that a former owner had been using an oil additive which was put into a cold engine. which could have been subjected to extensive amounts of condensation, resulting in the additive not blending with the engine oil'
After the original marine pan was installed on the new engine, we found that the engine now held seven quarts of oil.