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Continental 520

CJM

Active member
Hey everyone. Has anyone ever seen ball valves on the bottom of the oil sump of a 520 and the oil cooler? Looking at a boat that has this and never seen one set up this way.
 
It sounds like someone changed their oil on a regular basis and liked to keep it simple to me, he even drains the cooler.
 
Thanks that makes sense. What is the typical oil change interval on these? 100 hours?
 
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