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5.0 v 3.5. Which can make it from 100k miles to 200k miles with less problems

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5.0 v 3.5. Which can make it from 100k miles to 200k miles with less problems

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Old 01-27-2018, 03:34 PM
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Default 5.0 v 3.5. Which can make it from 100k miles to 200k miles with less problems

Two engines. 5.0 and 3.5 eco-boost.
Both are stock. No mods.
Both with 100,000 miles on it.

Which truck is going to make it to 200,000 with likely less problems.
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Old 01-27-2018, 03:42 PM
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Nobody really knows and can only guess.
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Old 01-27-2018, 03:47 PM
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Really depends on how each one was maintained, turbo's do wear out and the 6 has to work a lot harder to produce power than the 8. But as I said, maintenance is the key.
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Old 01-27-2018, 03:49 PM
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Depends a lot on how they were maintained.

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Old 01-27-2018, 03:50 PM
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Originally Posted by Rnlcomp View Post
Really depends on how each one was maintained, turbo's do wear out and the 6 has to work a lot harder to produce power than the 8. But as I said, maintenance is the key.
LOL Rnlcomp beat me to it.
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Old 01-27-2018, 04:11 PM
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Who cares?
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Old 01-27-2018, 04:13 PM
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Originally Posted by Rnlcomp View Post
Really depends on how each one was maintained, turbo's do wear out and the 6 has to work a lot harder to produce power than the 8. But as I said, maintenance is the key.
.
The 6 EB has to work harder in the sense that there are greater combustion forces within the engine because of the boost. Like a diesel, the cylinders, connecting rods, crankshaft, related bearings are designed with greater strength on a EB. I want to believe that's true because I own one. Since diesels are typically known for longevity, it's reasonable to speculate the EB is designed for longevity, too. The added complexity of turbos creates more opportunity for failure, yet diesels all have turbos, and diesel turbos are not known for high maintenance.
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Old 01-27-2018, 04:23 PM
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Originally Posted by Tiredofeverything View Post
Two engines. 5.0 and 3.5 eco-boost.
Both are stock. No mods.
Both with 100,000 miles on it.

Which truck is going to make it to 200,000 with likely less problems.
.




Odd question since you just bought your truck.....itís kinda late, eh? I mean that in the sense that it would have been better to ask just before, rather than just after, buying the truck.




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Old 01-27-2018, 04:24 PM
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All things being equal, and assuming all variables controlled, the answer is very clearly the NA 5.0. However, will most owners keep their trucks that long? I plan to, and this did factor into my purchase decision, but my towing/hauling needs also provided me with a bit more flexibility. If I were living at elevation and towing 8k lbs. on a weekly basis, projected reliability 6-7 years from now wouldn't outweigh my current needs.
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Old 01-27-2018, 04:25 PM
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Who cares?
The OP seems to have already purchased an EcoBoost and is now having second thoughts.

Unless he's willing to go right back to his dealer and trade for a 5.0, I agree: What's the point?

Either engine can display reliability. The 3.5 Eco pulls harder, but the 5.0 makes more power (through the '17 model year, at least). Enjoy the truck!
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