- Apr 14, 2008
- Reaction score
I just drained the conventional break in oil on my new inboard at 15 hours. I have to pump the oil out of the dip stick tube. So you can never get it all. I have about half a quart that I can never get out. Can I start running full synthetic from this oil change on? And will that half quart of regular oil be ok mixing with five quarts of synthetic?