My truck is also an XL, but its an STX FX4, it has sync 3, tow package w/ the puddle lamp mirrors etc... Basically, every option possible it has for a base work truck. So maybe thats why it has an AGM battery. Ford may think it needs one? IDK. Others said buy this or buy that non AGM battery but the CCA is lower on the non AGM. 760 CCA is what the AGM battery is and the H6 non AGM is 700. I wanted to go with the H7 but it was not in stock anywhere. My previous truck, (2002 Lariat) the recomended battery would last about 3-3 1/2 years but the optional, larger battery lasted about 5 years. Oh well, maybe next time the larger battery will be in stock.