I ran Valvoline 5W-30 & 10w-30 in both my old 4.6 T-Bird and 98 F150.
Any decent 5W-30, 10w-30 or 5W-40 will work well. Those engines are pretty forgiving & not very hard on oil. Heck, the DELO blowout from a few months ago would have been a perfect oil to run in the 5W-40 XSP version at $6/gallon.
Any decent 5W-30, 10w-30 or 5W-40 will work well. Those engines are pretty forgiving & not very hard on oil. Heck, the DELO blowout from a few months ago would have been a perfect oil to run in the 5W-40 XSP version at $6/gallon.