If you’re riding around in an older Cummins or Power Stroke-powered truck, chances are you’re experiencing some higher-than-normal engine temperatures. However, this issue might not actually be because of an issue with the radiator. When was the last time you took a look at the engine oil cooler? According to Diamond Advantage Diesel Parts, now might be a good time.

Older rigs can have several-hundred-thousand miles on them, and while it still runs great, over time, the oil cooler passages can become clogged with fine debris. When this happens, the cooler will cease to function.

The pathways in most engine oil coolers are so small that they catch and stop any large particles suspended in the coolant. Catch enough particles, and they will block the channel. While the mileage varies, it typically takes about 70,000 miles before the coolant can no longer flow through the cooler on its way to the EGR cooler, leaving less and less coolant flow for your engine oil cooler and for your EGR cooler.

A clogged engine oil cooler can lead to a ruptured EGR cooler, overheated engine oil, overheated fuel injectors, loss of coolant, ruptured engine oil cooler, and even a blown head gasket.

Diamond Advantage Oil Coolers are manufactured with high-quality materials to help lower oil temperature, creating better lubricity (since the oil is not being broken down quickly because of heat), decreasing wear on key engine components, and prolonging engine life.

• Direct fit replacement for ease of installation
• Manufactured with high-quality materials
• Meet or exceed all OE specifications

The 6.0-liter oil cooler is the exact same as the OE because Navistar was the original OE supplier. According to Diamond Advantage, the only differences with their oil coolers are a different brand on the box, a lower price, and a better warranty.

Backed by Navistar, this part is equipped with a comprehensive two-year unlimited mile warranty, including parts, labor for professional installers, and a no-risk and hassle-free core return.