I just bought a work truck tonight, 2012 F150 XLT, 151k miles, crewcab with the 3.7 V6. 302 hp stock, moves the truck well. I just need something reliable as I started a new job and didnt want to ruin my 2500 Dodge as Im working within spitting distance of the Gulf. I knew the 3.7 was a pretty reliable engine. The 5-1/2 foot bed Ill have to get used to. Of course I'm already brainstorming which oil and filter to run. Is it absolutely crucial to run 5W20 in these engines? Ive never been a fan of anything Xw20, Im considering a thin 30 wt such as Pennzoil Platinum 5W30, or Mobil 1 AFE 0W30 with a Napa Gold 7502, unless 5W20 is the ticket for this engine. I plan on having the coolant, tranny and rear axle serviced soon. Thanks for any help.