The radiator's overflow tank (near the battery) normally has a short angled rubber drain hose, and on hot days, it sometimes will dump radiator coolant right next to the battery and onto the area near the left front headlight.  But this short angled hose can be replaced with a longer hose that dangles below the vehicle just a bit.

Picture 1.  Original overflow tank hose.
Picture 2.  New longer overflow tank hose.
Picture 3.  Routing of the longer hose to exit below the left front end of the bumper, near the plastic  engine under cover number 2.
Picture 4.  The new longer drain hose exiting the engine under cover number 2 and looped through a tow attachment.  

Now if coolant does overflow the overflow tank (it really shouldn't do this under normal conditions), the coolant won't end up on your head light, but on the ground.

Sorry for the last pics is the wrong orientation.  Here it is correctly oriented:
You may have noticed the spark plug boots being off of their plugs; I was in the middle of a tune-up when I
thought of replacing the short drain hose with a longer drain hose.

Thanks for the mod!  I wonder if this is the reason my d-side headlight is all rusty looking inside?  Maybe it took on water from the coolant?  (Other than the crack that was in the front and patched by a previous owner...)

The only time in my life where I experienced a coolant overflow is when I had a head gasket problem on my Landcruiser.

In principle, like you write it, under normal use and with an appropriate level of coolant, there is no overflow....

Anyway, cool mod but ... sorry ... probably unnecessary.



Rogue, there are additive in the coolant which, precisely, prevents rust. The rust does not come, probably, from coolant overflow.

Very true David... the thing is I wonder about previous owners and their car "care!"  Sometimes people run straight water in the radiator instead of using 50/50 or whatever mixture with antifreeze.

Rogue, Fell free to change your coolant.... flush your coolant and used a ''flush additive'' if you want.

Check the colour. If the liquid that comes tout in a very opac or unusual colors, then there is a problem. Otherwise there is no problem. Then fill it up.