Ford Releases 2015 F150 mileage numbers.

[Soup DeVille]

I've seen it mentioned in a few articles.  Generally speaking, it takes more energy to plastically deform aluminum than steel.  It takes nearly 4x the energy per unit volume to deform 6061-T6 than it does a Grade 36 steel.

Are those the materials were dealing with though? It's been m experience that the exact opposite is true when talking about body panels; and then there's the repair cost...

[Soup DeVille]

I'd prefer the V8 myself, but 150,000 miles is 240,000 kilometres.  Would you keep it that long?  Also, based on the torture testing they did with the 3.5 EcoBoost...simulated 150,000 miles, work in a lumber camp dragging logs, pulling 2 NASCAR cars on a trailer around Miami Speedway for 24 hours averaging 82 mph, a towing contest where it beat both Silverado and Ram Hemi in an uphill towing contest, ran the Baja finishing 1st in the Stock Engine Class, dyno-ed the engine where it produced 364HP and 420ft-lb TQ, then did a complete tear-down where Visual inspection of the turbos, heads, pistons/rings, rod bearings and cylinder walls were within spec...http://www.full-race.com/articles/what-is-ecoboost.html.

Sounds like the turbos were still good for another 150,000 miles.

The impressive thing about the V6 Ecoboost in the F150, is that so much torque is available almost immediately.  Might be worth checking out when considering a pick-up.

Lots of people are now keeping their vehicles for over 200,000 miles; especially trucks. And those that don't are likely to be concerned with he resale value, which a blown out turbo is going to have a detrimental effect on.

But, there's no hard and fast rule about how long they'll last either. It could be these are better units than is expected.

Any engineer that does these things will tell you though; the wear that happens during torture testing is a different animal than what happens over the years of ownership.

[FoMoJo]

Lots of people are now keeping their vehicles for over 200,000 miles; especially trucks. And those that don't are likely to be concerned with he resale value, which a blown out turbo is going to have a detrimental effect on.

But, there's no hard and fast rule about how long they'll last either. It could be these are better units than is expected.

Any engineer that does these things will tell you though; the wear that happens during torture testing is a different animal than what happens over the years of ownership.

Undoubtedly true.  However, since they've been in production from 2009, there must be a lot of them out there with pretty high mileage and, if there was a problem with the turbos wearing out, there'd be a lot more squawking on the web than can now be found.  Ford put out a number of 150k, but it would be "at least".

[Eye of the Tiger]

Need a factory system to cool the turbos after shutdown. DUH.

[FoMoJo]

Need a factory system to cool the turbos after shutdown. DUH.

Turbos (bearings) are water/coolant cooled as well as designed for convection flow through the bearings after shutdown.

[Eye of the Tiger]

Turbos (bearings) are water/coolant cooled as well as designed for convection flow through the bearings after shutdown.

Right, but how far does that get it? Oil coking can still occur if it is just sitting there in the heat.

[FoMoJo]

Right, but how far does that get it? Oil coking can still occur if it is just sitting there in the heat.

With the engine off?

[Eye of the Tiger]

With the engine off?

Right. I'm sure some engineer figured an adequate rate of heat transfer from the bearings, but it is not instantaneous. The real problem will be owners who tend to shut down quickly after driving hard and/or cheap out and use conventional oil. That kind of abuse is not tolerated well by turbos.

[12,000 RPM]

I would take an 8 over a T6 too. When the Explorer kicks the bucket, I will be getting a 4 door pickup to replace it, and there is no way I will be buying an EcoBoost, for the simple reason that I will be buying used, and that turbo has to be replaced at 150K.

Do u typically keep cars for 150K miles

Let the next sucker deal with that.

[ifcar]

Undoubtedly true.  However, since they've been in production from 2009, there must be a lot of them out there with pretty high mileage and, if there was a problem with the turbos wearing out, there'd be a lot more squawking on the web than can now be found.  Ford put out a number of 150k, but it would be "at least".

Only since 2011 in a heavy-duty use like the F-150, though. A Taurus isn't going to put quite the same pressures on it.

[SVT666]

I'd prefer the V8 myself, but 150,000 miles is 240,000 kilometres.  Would you keep it that long?  Also, based on the torture testing they did with the 3.5 EcoBoost...simulated 150,000 miles, work in a lumber camp dragging logs, pulling 2 NASCAR cars on a trailer around Miami Speedway for 24 hours averaging 82 mph, a towing contest where it beat both Silverado and Ram Hemi in an uphill towing contest, ran the Baja finishing 1st in the Stock Engine Class, dyno-ed the engine where it produced 364HP and 420ft-lb TQ, then did a complete tear-down where Visual inspection of the turbos, heads, pistons/rings, rod bearings and cylinder walls were within spec...http://www.full-race.com/articles/what-is-ecoboost.html.

Sounds like the turbos were still good for another 150,000 miles.

The impressive thing about the V6 Ecoboost in the F150, is that so much torque is available almost immediately.  Might be worth checking out when considering a pick-up.

I would definitely be keeping it that long.  My Explorer is at 190,000 km right now and I will be retiring it to towing only/bad weather duty in a year or two when it hits 225K or so.  At that point I will get myself something sporty and fun with a back seat. When the Explorer kicks the bucket, I will replace it with a higher mileage pickup.

[MX793]

Are those the materials were dealing with though? It's been m experience that the exact opposite is true when talking about body panels; and then there's the repair cost...

I'm not sure what steel alloy is used for body panels.  A co-worker used to work in GM's sheetmetal design group, I'll have to ask him Monday.  30-36 ksi is a pretty typical grade for most steel applications, though.  IIRC, Ford is using 6061 for the F-150, though I'm not sure what temper.  I would guess T4, but it might be T6.  Depends on if they heat treat it before or after forming, since 6061 is notoriously difficult to form at the T6 temper.  If you want T6 on a formed part, your best bet is to form it in the O temper and then heat treat it up to T6 after forming.  And if you're going to heat treat post-forming anyway, you may as well go for T6.

The trouble with aluminum is that with many alloys and tempers, if it does dent it's very difficult to pull/pound the dent out.  Often it will crack (T6 as well as work-hardened alloys like 5000 series).  And welding can be a bitch since weld shrinkage on aluminum is far worse than on steel.

[Eye of the Tiger]

Reynolds wrap. Good enough for space ships, good enough for trucks.