Optima battery hissing/venting
I have a 1.5 year old Optima Red Top (34R) in my 4Runner and noticed a hissing sound coming from it after driving it home on Friday.
The 4Runner had been sitting in airport long-term parking for 5-days. I drove it home Friday and when I parked it, noticed a hissing sound coming from the engine bay. After checking it appeared to be coming from the vent nearest the positive terminal.
Is there something I should be concerned about or is this normal and I have just never noticed it before?
Thanks for the help.
2004 Land Cruiser -- OME/Slee Suspension | F/R ARB Lockers | 285/75-16 Nitto Terra Grappler | Slee Armor front, rear, sides and belly | Dual Battery | ARB Drawers