Originally Posted By: Tobin28
I’ve got a new 2018 F-150 with the 5.0. I’m looking to dump the FF at about 5k.
The truck is short tripped often( 5 miles to work).
Ford recommends 5w-20 in these 5.0’s.
My question is which 5w-20 should I use? I’m looking to go on the thicker side of 5w-20 because I’m worried about fuel dilution.
These engines have 16 injectors. 8 port and 8 direct injection.
I’m leaning towards Valvoline Full Synthetic and a Motorcraft Filter.
Nearly all 5w20's are the same as viscosity. Even super oils that use the best base oils pao/esters with high moly and zinc like Redline are almost identical in viscosity as m1. I suggest you try a couple and see what you like. The difference is some of those super oils will make that engine butter smooth when other 5w20's it will sound loud with the exact same viscosity. At our forum that has engine with mds and were told we "had" to use twenty weight, about 1/2 of the members use 5w30 or higher. You can use a great 5w30 like PUP and it will be as smooth as the 5w20 super oils out there that are real synthetic and not some random group 3.
The truth is very soon when gf-6 hits all oils will be very similar, low additive low viscosity all because they want to satisfy people driving the eco boosts and Obama fans with the gas mileage deal. So unless you leave the api donut just buy the cheapest oil you can, I am a big fan out costco deal m1. Or just go up in weight and gain a little metal protection, if money is no object PUP is a nice 5w30 with a clean GtL base oil and high detergency. People with v8's might want to opt out of modern oils that are being made more for di turbo's, 4 bangers with tiny tolerances, and the gov't wanting fuel mileage and no care to metal protection. Of course, just making the decision to run a 5w30 overcomes a lot of the sparceness you get from 5w20. Or try some of the super oils in 20 weight that are pao/ester based. They are putting every body in the same bag with their oil formulations, I personally think they are leaving guys with v8's from any consideration. 15 years ago if someone told someone with a v8 to use 20 weight, they would tell them to get the ph out of here. I say nothing has changed, it is your equipment now your choice.
