Coyote 5.0 just hit 2k miles

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Mar 19, 2024
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Funny, I actually spoke with Lake Jr about his recommendations for my f150 before i picked it up. I added my own recipe a bit, but he is a nice guy and very knowledgeable.

First OCI at 500 miles. I am running 40 weight, but I am also a big fan of Ceratec’s solid modifier. Cold start protection is better than any oil I have experienced as it is not waiting on the pump. Many people love 5w-50 in this engine. It’s known to have consumption issues, especially early renditions.

I followed Lake’s advice about setting the rings and simulating dyno pulls in the first drive. So far no consumption, quiet cold starts and this truck moves pretty darn good with the 3.73 rear end. 19.6 mpg over the past 1900 miles. Just hit 2k miles. Pretty impressive. Probably about 70% highway.

These trucks have issue with the VCT solenoids and I have read oil starvation may be a root cause with slugging being the real issue. I plan on doing changes often, probably 4k miles or so depending on how dirty the oil looks. Right now 1500 miles on the oil and it’s pretty clean. Thinking oil every 4k via my evacuator and 2nd with filter every 8k. I’m also considering switching to 50 weight in the hot southern summer. Any idea how Ford feels about this? I believe they make a 5w-50, not that I would choose motorcraft oil.

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Motorcraft 5w-50
Flash Point
185 Degrees Celsius
  • Recommended by Ford Motor Company for use in the Ford GT, Shelby GT-500 and Boss 302
Which is a variant of the coyote 5.0
 
what does the owner's manual say for your climate??,,myself i would run a synthetic 5w-30,any popular brand you find at wall-mart ,,as Valvoline EP,Mobil, EP,Castrol edge,pennzoil Platinum etc or 5w-30 Amsoil ss,, (for longer intervals) and a fram ultra,,,and importantly,keep it changed on a regular basis,,no constructive need for a heavier 50 wt oil,,as you mention oil starvation.
 
I’m in GA, pretty hot in the summer. I don’t believe starvation is so much of a weight thing vs slugging, but I get how thicker oil would potentially flow at a lesser rate. I hear you about the shearing issue. As far as oil chart, there is none that I can see. 5w-30 is listed everywhere. Hard for me to believe this is the only approved oil.
 
What will this have to do in what you should run

What I’m getting at is mostly the hot viscosity. It’s an interesting comparison. 0w-40 & 5w-30 are very similar. Trying to find an oil chart that is not CAFE regulated for this engine. Is a slightly thicker oil at 100c is actually better and offers more protection vs 30 weight?
 
What I’m getting at is mostly the hot viscosity. It’s an interesting comparison. 0w-40 & 5w-30 are very similar. Trying to find an oil chart that is not CAFE regulated for this engine. I guess what I’m getting at is is if a slight thicker oil at 100c is actually better and offers more protection vs 30 weight.
Wouldn’t 50 grade be better by using that logic you need to know your oil temperature to make best choice.
 
Wouldn’t 50 grade be better by using that logic you need to know your oil temperature to make best choice.
Yes, probably, but I’m concerned about warranty issues since I can’t any oil chart. Maybe 5w-30 is the safer bet to avoid any issues. 5w-50 is a big jump at hot viscosity.
 
5W-30 is a good grade for Coyote street use. Don't need anything thicker than that. Track use is a different story.

If you're doing a bunch of heavy extended towing you might consider a xW-40. Does this truck have a decent oil temperature gauge? It should have some kind of factory oil cooler on it.
 
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Is a slightly thicker oil at 100c is actually better and offers more protection vs 30 weight?
What you want to compare is the HTHS (high temp/high sheer) viscosity spec ... that's what really matters between moving parts, the actual viscosity of the oil under high temp and high shear rates like what goes on inside journal bearings and between the rings and cylinder bore. If you want a stout 5W-30 with a higher HTHS viscosity, look into Euro formulated oils.
 
That engine is costing Ford a lot of money in warranty. My buddy has a 2019 that had excessive oil consumption. The first round they put on new cylinder head assemblies, the second time he got a complete new engine. And the dealer removed the entire cab to do the repairs. The service mgr told him the techs have gotten really good at the repair process because they have done so many swaps. The new engine has fixed the problem so they figured it out.
 
Your truck being new and under the manufacturers warranty I would stick with what Ford recommends. They bring their vehicles here (Tucson) for Summer testing where I-10 temps run 120F+. I run 5W-30 in my truck and 0w-20 in my GR 86. I don't hear of anyone have oil related issues. I wouldn't push my luck with after market additives, etc. as that engine use a rubber belt that runs off the crank down about 8" to the oil pump. I've seen a number of newer Ford V6-8's at 75K miles and those belts are beginning to deteriorate. Fords make recommendations do to that design. Remember that oil feed belt rubber belt runs in hot engine oil. If it fails ... bye bye engine.
 
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