If you have filled it to the top,
When it heats up, you (and all of us) will experience "Thermal Expansion".
In simple terms, your 2 gallons of water has turned into 2-1/8 (or so) gallons of water.
2-1/8 gallons will not fit into the 2 gallon space.
It will push out all that will not fit (down to the 2 gallons of hot expanded water that will fit)
You get home and go to sleep.
The water cools, in the morning you snatch off the cap, you are an inch or so low. Wild guess, you now have 1-7/8 gallons in there.
Take it down the road, the water is hot (and expanded). The "inch low" is now to the top, the water has expanded back to 2 gallons, the radiator is full.
As long as everything remains great and fine the water will not push out anymore unless you add some. Or you have some overheating.
Moral of the story, a little low is normal (you will learn as time goes on, looking into a cool radiator).
You still must "maintain" that level (cold)
I have made Popsicle sticks/ similar device with a mark on it to verify what my "normal" cold level should be, I would store them in a crevice in the hood's underside.
As with the oil, your owners manual says to check it "weekly". Performing all of your Jeeps scheduled maintenance will make him last forever!
You can mix your coolant 50/ 50 to 70/ 30
I always do 70/30 so that if I'm forced to add plain water in later, I'll still be with the tolerance!
Always mix the coolant correctly in vessels prior to pouring it in your Jeep. There is no "wrong" guessing doing it that way. No matter if you need 1 gallon or 10 gallons, now or later, the mix will always be right even with some still in the system.
Sunday, July 19th, 2020 AT 2:52 PM