This is kinda what i mean.That was nothing but Motorcraft Synthetic Blend done by the dealer. No engine issues, still original timing chain and guides. Original CATs. Only replacement was water pump (cuz it was leaking) at 130,000 and passenger valve cover gasket at about 165,000.
When I first had the truck back in 2011, I usually went by the OLM. But I kept it at about 7500 miles. This truck wasn’t babied. It was a tow pig and worked hard.
Till I discovered this forum in 2018 and changed my intervals to every 5000.
Nowadays both trucks get about 3000-4000 intervals. Overkill yes but I use my trucks as intended.
As long as you are not flogging your truck, you can run any oil that meets API SP or SN+ and have zero issues as long as you don't run it for 20,000 miles. And why I suggested Supertech for 3000 mile OCIs. Not because I think supertech is the greatest oil ever, or even as good as Valvoline(although I don't have any reason to believe it is not as good or possibly better), but because there won't be a statictically measureable difference between it and a more expensive oil in the normal lifetime of a vehicle.
Some serious neglect occured on @boostkingMatt's 2012.
An oil cannot suck if it meets API SP and Dexos1 Gen 2 as most full-syn 5W-30's do. I would guess that any oil that meets those also meets the Ford spec by default, since I think the Ford spec just reguritates the API spec.
And really, the reason Supertech is cheap is because its bought in mass quantities by Walmart(and by Costco and Amazon with its sister products) and they arn't paying millions of dollars to have Supertech logos plastered all over Nascar. Walmart has basically zero advertising budget. So just because its cheap does not mean its low quality.