I'm about to fit a Mikuni heater......any advise about fitting would be appreciated....can it be used when sailing...manual seems to indicate that it can't at mor than 20degrees of heel?
All the diesel heaters (Mikuni, Eberspacher, Webasto) are more or less the same. You shouldn't have any problems as long as your boat is not upside-down, especially once the heater is alight and working. (assuming you've installed it correctly to instructions).
Agree, my Mikuni came with comprehensive and unambiguous instructions. Just follow them and you you'll be fine. The worst part has to be drilling the large holes for the warm ait ducting, ok if you're a contortionist.