[1BadOilBurnerN-Lv]

I've noticed since it's gettin hotter out 100 plus , I cant keep my truck above 18 mpg. Before it was anywhere from 20-22 hc . Now its getting warmer out ive noticed it keeps steadily decreasing is this normal ??:w::CRY::$:

 

[BigBlue]

Might be your engine fan kicking on more often. Mine was permanently engaged and I lost 3mpg.