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Join Date: May 2007
Location: Bloomingdale, IL
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Drives: 01 Black 911 Turbo, 09 X5
Why is an oil cooler important and why upgrade to a larger oil cooler?
Why is an oil cooler important
This question has been the most emailed/private message question I receive so I decided to answer that question with this post. The n54 has two primary cooling systems. The first is the engine’s radiator coolant system which cools the top of the engine. I will go into that in more detail when we release our twin core radiator system.
The rest of the engine’s internal components are cooled by engine oil, these internal components include pistons, connecting rods, crankshaft, bearings, camshaft, lifters, and those tiny turbos.
Engine oils job is not only to cool these components but also to lubricate and cleanse them. In order for engine oil to perform well it has to be kept within a certain operating range. BMW has installed a thermostat to monitor and regulate the oil temps. When the engine oil is below the optimal range the thermostat stays closed allowing the engine to warm up the engine oil quickly. On the alternative side if the engine oil becomes too hot, the thermostat opens a valve to allow engine oil into the cars oil cooler (if you have one) The oil cooler then cools down the oil and is then recirculated back into the motor.
Why upgrade to a larger oil cooler?
At stock power levels the n54’s ability to keep its oil temperatures in check are marginal. Even in cool weather and some “spirited driving,” it isn’t difficult to get the oil temps to go well above 250 degrees Fahrenheit. If you Google, the words “n54 and Limp mode.” The number one reason for the n54 to go into limp mode is oil coolers inability to keep the oil temps within optimal range (fuel pump issues seem to be closing the gap!). A larger oil cooler will help you enjoy your car without the fear of oil temp induced limp mode. Your engine will also perform better and last longer and so will those cute little turbos.
Here is a great bit of news, we have reduced the price to only $695 for the holidays!
Last edited by Vince@ V K Motorwerks; 12-05-2008 at
10:34 AM
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