You can't do this test sitting in a parking lot and idling. Keep in mind, this test requires that the engine is up to temperature and that you measure while cruising down the road, about 40-60 mph. When your engine oil cooler is working well, the coolant and the oil temperature track each other fairly closely, within 14°. The best way to test an engine oil cooler is to measure the temperature of your engine oil and coolant at the same time. What are the symptoms of a bad engine oil cooler? Allow your engine oil temperature to run cooler than your coolant temperature (often 195° or higher since your coolant is controlled by your thermostat!). Feed cooler, better filtered oil to your injectors and high-pressure oil pump g. Eliminate the chance of oil / coolant cross-contamination by way of a failed engine oil cooler f. Have cooler engine oil running throughout your engine e. Have more, cooler coolant flowing through your EGR cooler for increased longevity c. When you upgrade to the BulletProof Engine Oil Cooler you will: a. The best solution? Upgrade your engine oil cooler to the BulletProof Engine Oil Cooler. Why you shouldn't is a shorter answer! All kidding aside, replacing the Ford engine oil cooler with another Ford engine oil cooler is simply putting off the problem for another 50,000 miles. Why should I go with a BulletProof Engine Oil Cooler over a stock Ford engine oil cooler? The BulletProof Engine Oil Cooler is the "Go Big". To solve this issue we had to do what one customer easily summed up by stating "You either have to go big or stay stock." The Ford Engine Oil Cooler is, of course, the stock part. We studied and learned and kept coming to the same conclusion, unless you deal with the coolant plugging up the pathways through the oil cooler, you are always going to be fighting the same 6.0L issues. Understanding the 6.0L and its pattern failures led us to one central point, the Ford Engine Oil Cooler. I see that you have the BulletProof Engine Oil Cooler on your webpage what is that all about? To make matters more clear, even if you could flush it out, how would you know when you are finished? What if you think you have it all clean only to reinstall it and discover that, well, it's not as clean as you thought. The same reason why dirt, sand and other "big" particles get stuck in your Engine Oil Cooler, the coolant pathways are so tight and small, is the same reason why you can't effectively flush it out. Can't I just clean out my old engine oil cooler? By replacing the EOC, you will be helping to improve your engine oiling, improve the cooling of EGR gasses, increase the life expectancy of your EGR cooler, reduce the chance of "puking" of coolant from your overflow bottle and improve the quality of oil running through your injectors. It really helps in lots of ways! The Engine Oil Cooler is a critical component to your engine's operation. So how will replacing my Engine Oil Cooler help my truck? Putting a new EGR cooler in your Ford without taking care of the root of the problem is just asking for more trouble. While the mileage varies, it typically takes about 50,000 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. These pathways are so small that they catch and stop any large particles suspended in the coolant, blocking the channel. The problem arises when the coolant flows through the tight passageways of the engine oil cooler. The engine oil cooler needs to be replaced because it clogs up with heavy particles trapped in the engine coolant. This is the MOST IMPORTANT aspect of truly understanding the 6.0L engine. It is situated directly below your engine oil filter, right on top of the engine. In fact, Ford Motor Company states that the 6.0L can require up to 18 gallons of oil per minute at peak demand! To handle this large cooling load for your engine oil, Ford designed a liquid-on-liquid engine oil cooler. With your 6.0L, your engine needs to be able to cool a lot more oil than most vehicles. Most truck owners are used to what they grew up with, auxiliary coolers at the front of the vehicle, similar to a small radiator. Isn't my engine oil cooler just a small cooler mounted at the front of my truck? It is related to your EGR cooler and, in fact, is often the reason you need a new EGR cooler in the first place! Your shop is not only telling you the truth, they are also very familiar with this Power Stroke pattern failure (not all shops are!) and are doing you a favor in fixing your truck in a comprehensive manner. The simple answer is that your engine oil cooler is just that, the part that cools your engine oil. What is that? Are they telling me the truth? My shop is telling me my EGR cooler is bad and that I also need an engine oil cooler.
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