05-17-2014, 04:58 PM
Metric? with an o-ring. Interesting! Mine is already plugged but it might be a good idea for others who still have the gauge to buy a plug just in case.
Forest & Cindy Olivier
1987 log cabin
2011 Roadtrek C210P
PO 1999 Foretravel 36'
1998 Newell 45' #486
1993 Newell 39' #337