Why can't they put a buffer in the fuel so that no matter what the burn products are they would be neutralized?

The one idea here that sounds sure fire is the diesel fuel. Does it ignite and run well enough in a glow engine to clean it out? I'm wondering what happens when you put something with 25% ether inside a four stroke and fire it up. Maybe it's fine. If so, it sounds like a great technique. If not, then keep a bit of no nitro all castor fuel on hand for a few second run at the end of the day sounds like the next best thing.

Jim