I have a 2012 F-150 FX2 with the 5.0 Coyote motor. Bought it used with 90,000 miles on it. I have had the oil changed three times at Kwick Kar and asked for Valvoline. What I'm wondering about is can I switch directly to a synthetic? Or do I need to use a semi synthetic for one change? Plus I live in Texas and it's very hot here. I beat this engine as much as I can. Can I use a different winter rating in a synthetic and get more protection? Or just use the winter rating Ford says to use?
Thanks
Thanks