08-24-2022, 01:13 AM
Thank you for your replies. I am using the Honda brand 10w30 full synthetic. That's a good thought about the volume of the oil expanding when it gets hot, but I rechecked it the next day with the engine cool and the level is the same - the sightglass is completely full. What are your thoughts concerning something preventing the oil from flowing back into the crankcase at certain times to allow an accurate measurement? What stops the oil in the oil cooler from completely draining into the crankcase whenever the engine is turned off, or does it?