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For years, the 6.0-liter Power Stroke was the engine enthusiasts loved to hate. Often dismissed as the red-headed stepchild of the diesel world, it gained a reputation for being unreliable compared to its predecessor, the 7.3L.

But times are changing, and many people are starting to realize the real value in these engines, not just from a financial standpoint, but also because they can make huge, reliable power when built correctly. This platform is far from dead. In fact, it’s undergoing a revival.

And part of the reason is that when done right, a 6.0L can outperform a brand-new truck for a fraction of the cost. Let's cover some of the most common questions about this engine and clear up a lot of misconceptions in the process.

Are There Good Aspects of the 6.0L?

It is easy to overlook the good design aspects of this engine, especially when the forums and social media focus so much on its shortcomings, but the 6.0L has a solid foundation and more robust internals than you might think. For one, it comes from the factory with a bed plate design unlike the 7.3L. Because of this, the 6.0L requires significantly less work to produce high horsepower figures.

It is also a better designed engine than the 6.7L, which even Ford updated with stronger connecting rods during production. There are of course, some areas where the 6.0L falls short, and some common early failures resulted in it getting its bad reputation.

Why Was the 6.0L so Hated in the First Place?

The hatred largely stems from a few high-profile failures that became synonymous with the engine. Most of these issues were deck-up problems - meaning they happened at the head gasket level or above - rather than catastrophic bottom-end failures. This is always preferable for engine builders, as putting a set of heads on an engine is far cheaper than dealing with rod issues. However, the common issues for the 6.0L have included:

• Head Gasket Failures: Often caused by over-stressing torque-to-yield bolts.
• Turbo Issues: The 6.0L was the first to use variable geometry turbos, which faced early growing pains.
• Sensor Problems: Simple issues, like a dirty exhaust back pressure sensor, could trick the computer into calling for too much boost, leading to engine reliability issues.
• Lifter Failures: Lifter failure is often the nail in the coffin for a 6.0L because it typically wipes out the camshaft, requiring a full rebuild. While many blame excessive preload, the real culprit is often a perfect storm of cumulative tolerances and extreme heat.

NOTE: A flat-spotted lifter will often make a distinct squeaking sound, which many owners mistake for a belt or pulley issue. Excessive idling or rolling coal tunes drop fuel into the oil, causing fuel dilution and eventually killing the lifters.

The Primary Issue With the 6.0L

While the above mentioned issues are well-known problems with the 6.0L engines, the root cause of most problems can be traced back to the oil cooler. If it stops up, the oil temperatures rocket and it sets off a chain reaction that destroys everything from the EGR cooler to the fuel injectors.

• Heat Soak: When oil temperatures exceed design limits, O-rings erode and fuel injectors fail.
• EGR Failure: A clogged oil cooler is usually what causes an EGR cooler to malfunction.
• Component Melting: In extreme cases, internal heat can actually melt the oil filter standpipe, sending liquid plastic into the crankshaft and causing rod failure.

What Can Be Done To Prevent Oil Cooler Failure?

Upgraded oil coolers are a logical step, but there are several factors to consider first. Be cautious about air-to-oil coolers - their effectiveness is entirely dependent on constant airflow. If you are stuck in stop-and-go traffic or pulling a heavy 14,000-pound load up a steep grade at low speeds, that airflow disappears, which can lead to the very lifter failures you're trying to avoid.

A remote coolant-to-oil cooler is more expensive, but it offers the most consistent heat dissipation because it doesn’t rely on vehicle speed to keep oil temperatures stable.

Regardless of the setup, monitoring the temperature difference between oil and coolant is non-negotiable for 6.0L owners. Once that oil hits 220°F, it begins to break down rapidly, causing damage to the entire engine.

How Does Choate Performance Improve These Builds?

You can't just throw parts at the problem, you need an in-depth knowledge of how everything hangs together. We focus on enhancing performance and reliability through precision machining, factory fault correction, and using upgraded parts that meet or exceed OEM specs.

• Sand Casting Removal: We perform extensive cleaning to remove the grit and sand left over from the original factory casting process.
• Precision Balancing: We use advanced algorithms to balance the rotating assembly, reducing the massive axial forces that can punish a crankshaft at high RPMs.
• Upgraded Camshafts: We encourage upgraded cams to help the turbo spool and, more importantly, to slow down the rate at which valves slam shut, keeping the lifters happy.

Get the Most Out of Your Ford 6.0L with Choate Engineering

We specialize in solving the real problems found inside today’s most popular diesel power plants, including Duramax, Power Stroke, and Cummins. Our engines are fully remanufactured and re-engineered to outperform factory designs.

When you buy a remanufactured 6.0L Power Stroke engine from us you can rest assured that every detail is inspected, machined, and upgraded to meet or exceed OEM specifications. Unlike a simple rebuild, which may reuse parts and skip precision machining, our reman process corrects the known weak points as well.

• Short Blocks: Ideal for budget-friendly builds requiring a proven, reinforced foundation.
• Long Blocks: Fully assembled with heads, cam, and valve train for a quicker, seamless install.
• Full Running Engines: Complete drop-in solutions that are tested and ready to get to work.
• Upgraded Internals: Upgraded pistons and internal components meticulously designed to handle added horsepower and torque safely.

Visit us online today and find an engine built right the first time. Whether you need a daily driver or a dedicated workhorse, we are here to help you get the most out of your Ford 6.0L Power Stroke diesel today!