I was talking to another boat owner who also has a Yanmar 2GM. He is under the the impression that you should not run a diesel for extended periods while heeled over because the motor might not circulate enough oil. I have certainly done this (some days, thats the only way you are going to get back in the Golden Gate!) , have never had a problem or heard that I shouldn't. I looked at the Yanmar manual and it doesn't mention anything. Has anyone heard of adverse effects of heeling while under power?