Originally Posted by VN750Rider/Jerry
The Vulcan 750 base gaskets are very flimsy. Only about a 1/16" between the coolant passages and edge of the cylinder. If it is leaking coolant into the oil, it needs to be fixed. Coolant and oil mixed together make glue. Not only does it not lubricate well, but it plugs everything up.
I should be able to tell if it's mixing with the oil by looking through the sight glass, right? Or is this something I need to drain the oil for?