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Which engine? What is the source of the photos? Here's more actual evidence: https://www.autoguide.com/auto-news/2015/01/is-carbon-buildup-a-problem-with-direct-injection-engines-.html

Like I said, share your proof. These engines have been in operation for well over a decade. If there were widespread issues with valve contamination in the 2.0L EcoBoost engines there should be all kinds of reports from reputable press outlets. Please find them and report back.

I shared my proof. I've been operating Ford's with 2.0L EcoBoost engines since 2014. One had 140,000K miles before we traded it. It idled smoothly and got the same fuel mileage when we traded it as it did when we bought it. Ford's EcoBoost engines include an air/oil separator to prevent liquid...

This claim is as unprovable as it is unfalsifiable. I shared proof for my claim; where's yours?

If Ford did indeed add port injection to the 2025 2.0L engine, it did not do so because of valve contamination. "Expert" claims to the contrary, Ford solved the valve contamination issue on its direct-injection engines a long time ago. If your engine is experiencing valve contamination it's...

You get maximum torque at 3000 rpm, but you get 90% of maximum torque (~250 ft-lb) at 2500. Go take a look at the torque curve for Ford's 5.0L Coyote engine. The 2.0L EcoBoost makes the same torque at 2500 rpm as the Coyote. The EcoBoost--like most boosted small-displacement engines meant to...

This is an oft-repeated canard for which no one ever offers evidence. The reverse of this speculation may ALSO be true: vehicle designers and engineers care about long-term durability and reliability because that's how you build brand loyalty. Toyota has built it's reputation on long-term...

You have to distinguish between FOMOCO warranty and DEALER warranty. FOMOCO is not obligated to pay for repairs from damage caused by installation of aftermarket parts. If a dealership installs aftermarket parts it's up to the buyer to confirm the dealership will warrant its work.

This is anecdotal evidence. Your experience with your truck on those specific days cannot be extrapolated to all possible circumstances. I'm not sure why you felt the need to include this. I don't believe I accused you of being emotional. ??? In what way do you feel that I freaked out? I...

Is this speculation, or do you have some evidence? How much empty space will remain in the tank after 3 clicks? Or 5 clicks? I think this is the nub of this discussion. Let's apply some logic: The term "by design" includes some assumptions, among them that the user follows manufacturer...

You might get a better reception if you didn't continuously insult those who disagree with you. The diagram and text you posted in support of your position addresses concerns of refueling. Given the system design, it's unlikely you will force fuel into the charcoal canister during refueling by...

Then I misread your posts. It sounded like you said you were adding two or so gallons at a time. Have you used an entire tank before refilling?

I would be very interested if you would run several tankfuls through and hand compute. There are many, many variables that can affect fuel efficiency computations, and they tend to average themselves out over a few tanks. Older Ford owner's manuals used to recommend hand measuring over at least...

This explains a reduction in power output, not an increase in efficiency. All other things being equal, it requires the same amount of horsepower to maintain 70 mph no matter high the humidity is. The only difference to the driver would be a slight increase in accelerator pedal pressure to get...

Call them with a two-word answer: Sue me.

One more quick tip: You can limit the mess from filter removal by first placing a quart-sized plastic baggie around it. Loosen the filter enough that you can turn it by hand, but not enough to start leaking oil, then place your baggie around it being careful to ensure the top of the baggie is...

Instant indications from the computer are meaningless. The only way to truly test is over several tankfuls to average out all the variables.

If you see a decrease in fuel economy when switching between octanes then something else is going on. There is no more energy in higher octane fuel than lower octane. If better fuel economy were on tap with premium then the manufacturer would require it use to meet federal fuel economy standards.

This. And even those who did were eligible for combat at a moment's notice. I get OP's point, but I think it could have been made differently.