Originally Posted by robert.beck.7737
Exactly what do the low point drains do. Is this all you have to drain to winterize your RV or do you still need to pump RV antifreeze or blowout the system? I know you have to put antifreeze in the P traps
The lowpoint drains are literally the lowest point in your RV's plumbing system. Once you drain your WH, you should be able to get any remaining water out by opening them up.
As far as winterizing with AF, you'll get mixed opinions on that. Most everyone blows out their lines with air. Some *only* add to traps and toilets. Others pump AF throughout. It's really your personal preference.