My 2012 Santa Fe has full radiator but
reservor is almist empty . Should I add mor
coolant to it ?
Maybe the reservoir has a leak? Replace it. Also the hose from reservoir to radiator.
Add 50/50 water/coolant up to the "hot" or "cold" mark as appropriate.
Hey guys those are good answers, I don't know what I was thinking? It's a shame to get old, like me.