ford says use 5-20 can i use 15-40?
#16
#17
![Coffee](https://www.f150online.com/forums/images/smilies/coffee.gif)
![EEK!](https://www.f150online.com/forums/images/smilies/eek.gif)
![lol](https://www.f150online.com/forums/images/smilies/lol.gif)
my bad...must not of had my coffee yet or maybe just came back in from blowing snow and still had my glasses off
![Llama](https://www.f150online.com/forums/images/smilies/llama.gif)