Hi Glen,
I've racked my brain to come up with a way that this system could fail and haven't come up with anything.
Hotwiring ignition ??
John
Maybe I worded that wrong. What I meant was, before I installed this valve on a ridiculously expensive Vincent engine, I made sure there was no way it could fail. I'm still satisfied that this is the case. The key in valve idea works.
There are at least two manufacturers making oil shut offs with ignition cut out interlock switches as part of the valve. These I would put in the category of quite safe, but still subject to failure should the switch fail to do it's job.
Would probably stick to the drain and fill plan rather then take a chance with one of these.
The riskiest of all has to be the "auto" type when used on the feed side . Not sure why these are even built.
Fortunately, my new to me A10 must have had some work done, because it doesn't wet sump at all. The bike has been sitting for two months now and the tank is still full.
Glen