Advocate III
I'm really interested in these things. Seem to be the perfect thing to have in your rig. 80% smaller, up to 5 times the discharge time of a regular extinguisher, no chemicals that can be corrosive to engine parts. Also claims to fight all major fire classes. A, B, C, and K. I think I maybe sold! Gonna get one...maybe two.
https://elementfire.com/
https://elementfire.com/