They're definitely working HOTTER

I can't speak for others, but for me it isn't a matter of fear, more along the lines of being skeptical. I know for a fact ANY of the major auto makers have the ability to make both NA and boosted engines that could last literally forever. They choose to put profitability first, and I understand that. To answer your question more directly- I think the pistons, piston rings, and yes, the turbos will all be potential weak spots in the future. The guy that drives around empty or pulling a utility trailer will never have an issue. The guy pulling a 12,000+ lb(we ALL cheat once in a while) 5th wheel up a mountain repeatedly, then continually shutting it down without proper turbo cooling-down time, WILL kill his ecoboost sooner than later. 99% of people in America today, have absolutely no idea how to care for a turbocharger- and that's a fact.

Well I can understand the skepticism of using subpar parts to be profitable. And that very well may be true. I hate to think they would cut corners on something they are trying to make the future of all their products though.

As far as turbos, I agree, but I think bearing technology has come along way to make things easier. Even oil, coolants, coatings, etc have made things that were troublesome in the past not so relevant. Some use thermal siphoning or run oil through the turbo after shutdown and walking away. You could hear it like electric fans do on the common cars these days. Usually these only kicked on if you shutdown after really beating on it and they were glowing so to say. I don't think the EB uses anything after shutdown but then again I've never run mine that hard.

Think about the new 2.7 EB. It's going to use start/stop technology. In curious how cooling the turbos will work with that. I'm assuming if the turbos are rally hit the start/stop will disable. Then again, if you towing heavy you'll probably shut it off yourself.

Quick search shows turbo cool down on the EB is not needed so that answers my question.

https://www.f150forum.com/f70/common...oboost-165949/

I'm not a mechanic, but I'm pretty aware of the differences. I'd love to hear your opinions on how those differences make this an apples-to-oranges comparison with respect potential longevity of the Ecoboost.

From one point of view, the EB is not working as hard as the 5.0. Daily driving my EB, I seldom have any occasion to rev it over 2k rpm, unless I feel like screwing around on the freeway on-ramp or something. When towing, it never goes above 2500 rpm.

In comparison, my 5.3 Chevy (the closest comparison I have to the 5.0) routinely revs to 3k or so before shifting under reasonable acceleration. Towing, it is between 3k and 5k rpm the entire time. Not because it is a bad engine, but that is just where it needs to be to make its power. So, it is turning a good deal more revolutions under similar scenarios over the same miles as an Ecoboost engine would.

There are numerous articles about the differences between gas and diesel as it relates to turbos. I am not going to educate you on the facts.


Google "turbos gas diesel" or something like that. They work very differently and explain why if you really want a heavy tow vehicle, diesel is the only option.

You have a point. Pilots learned long ago that when you increase manifold pressure with the throttle and increase the prop pitch to lower rpm's, you do save gas by lowering friction. You are kind of doing that with the ecoboost. So why does it get less gas mileage than the 3.7l, which is larger?

Your point of view is interesting on RPM's. It doesn't account for all the factors.

Here is one thread on the ecoboost over heat issue when towing.

https://www.f150forum.com/f70/eb-ove...utions-265180/

https://www.f150forum.com/f82/how-co...=cool+ecoboost

I agree RPMs can mean a lot or a little, my truck pulling my 3H GN horse trailer pulls well in 5th at 65-70 on the freeway, it will do 6th on flats, but I usually lock that out just to save lag time when I have to accelerate and also to keep it from hunting in hills. I run less than 2500 in 5th at 70, so really not working the engine very hard at all. I dont seem to see too many threads about overheating 5.0s.

That's a good point. The 5.0 has to rev up to 4250 rpm to get to peak torque and 5500 to get peak HP. So technically the 5.0 has to work harder.