I have made a lot of modifications to the truck. It features a bulletproof eGR cooler, up pipes, a 2006 turbo, and an intake. Mishimoto radiator, bulletproof oil cooler, and CTSS3. With only roughly 1000 lbs in the truck, my oil and coolant temperatures are still around 220. Despite my best efforts, I am concerned about overheating because I tow a 7000-pound trailer. How have you managed to keep these items cooler? And how typical is towing?
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I have a 2003 early 6.0 that I bought new, and it’s completely stock no EGR delete or anything. It still runs and looks great, so I plan to keep it until it’s no longer drivable, especially given the cost of a new one.
On a related note, why is it considered bad to run coolant temperatures at 220 degrees? I have been researching this, and most sources suggest that higher temperatures, like 220, can actually be more beneficial than the lower range of 190-195. Higher temperatures can lead to more efficient combustion, better fuel economy, reduced engine wear, cleaner oil, and other advantages. Many people still believe that 195 is better, but that is often just a conventional belief.
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It will remain colder if a 7.3 fan clutch is installed.
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First, it’s important to note that with these trucks, the key is the temperature difference between the coolant and oil. If you notice a difference of more than 15-20 degrees while driving empty at 65 mph on a flat road for 20 minutes, you should replace the oil cooler. Your coolant temperature is currently too high, it should stay below 205 degrees during normal driving. At 220 degrees, you risk encountering problems. Address the coolant issue before it leads to further issues. Ensure your thermostat is set to 185, 195, or 205 degrees nothing higher. Check that your water pump is functioning properly and consider a coolant flush, as these trucks came with subpar coolant and a passage system for the water and oil that can clog up. I live in central Florida, and even driving at 75 mph in 95-degree weather, my coolant rarely exceeds 202 degrees and my oil temperature stays around 210 degrees.
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In addition to raising the temperature, the music you choose to use may also have this effect.
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I tow a 9 to 11k 5th wheel camper and usually see temperatures between 200 and 215 degrees. In a headwind, I once saw 230 degrees before I slowed down. You might not have removed all the air from the system. Have you replaced your thermostat? Did you install a Bulletproof air-to-oil cooler? If so, improving air flow might be the only way to address the oil temperatures.
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The thermostat was my next thinking. The air exchanger is present, yes. Since I live in the mountains, I drive up hills a lot.
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Oil temperatures probably can not be adjusted at this time. Perhaps give Bulletproof a call, or check out some forums to find out what temperatures are typical for the air exchanger.