04SilverF150

I have a 2004 F150 with the 5.4L, bought it in May with 28K on it. Now has 33K. I was noticing the coolant was just slightly below the lower 'range mark' on the expansion tank. It's always been on the lower side of the expansion tank, so I went to Ford and got the extended life coolant. Topped it off almost 1 Qt. Nothing alarming, but I was wondering what folks were seeing in terms of slight evaporation, etc. (my oil is fine, no coolant leakage, anywhere, etc. )
Thanks

Jason

Good old Bill

You are doing the right thing, keep an eye on it. If it stays constant and it should, you're good to go. But if it keeps going low, something is not right. Its a sealed system. Years back we had big radiators and room for expansion in them, now a days its all about weight.