RE: Gas Engines!?
BTW, if you decide to stay with glow, there is a solution. It can work perfectly in some cases. It usually works very well in most.
Silicone exhaust extensions work wonders usually. I've got a couple of everyday models that are almost electric-clean at the end of the day. And most of the rest only take one paper towel at days end.
If the ones sold in the LHS don't work for you, try the "tuned pipe connector" blue silicone hose and use a length of it.
It won't solve every problem but it'll make most of them no problem at all.