1993 Ford Explorer Antifreeze loss

[dbillingsley]

My 93 Explorer is losing about a gallon of antifreeze every twenty miles. I don't see leaks,smell leaks, my oil is clean, and the exhaust does not smell nor is it there any white smoke. Any idea where my antifreeze is going?

 

[Turdle]

Did you just recently flush or drain the radiator?

How many gallons have you actually put in?

What conditions led to the start of this issue?

 

[dbillingsley]

When the problem started, I took it to my local Valvoline store and had the oil and antifreeze change. I had the antifreeze changed because I had to use plain water a few days earlier. That was about a month ago. Until then, other than routine changing, I never put antifreeze in the truck.

In the past three weeks, I have put about three more gallons of water. I tried keeping the overflow tank full, but I found it does not keep up with the loss. I have to fill both the radiator and overflow tank.

A close estimate would be three gallon of antifreeze between fill ups, or 150 miles.

 

[dbillingsley]

Nothing else has changed. The truck as 141k miles and still runs great. I use it to haul a camper to the coast a couple of times a year.

 

[dbillingsley]

I am considering bypassing the heater core. While I don't smell antifreeze, it might be diluted with the AC condensation.