Cessna C-200 Airforms Engine Baffle AF0750152-3 - Congealing

Engine oil thickens at cold temperatures, this thickening is commonly referred to as congealing. Even though it is bolted to a warm engine, it is possible for a congealing type oil cooler to remain cold enough to cause the engine oil inside it to remain cold and thick (congealed). When the engine warms up to about 160-180F the vernatherm directs oil into the oil cooler, but if there is congealed oil in the cooler, it can take a considerable amount of time for the oil to begin to flow through the oil cooler.