Today we're going to take a look at the Flex-a-lite compact oil cooler with the 3/8-inch barb fittings. This is ideal for reducing temperatures in fuel, turbo oil, differential oil, or power steering fluid. It is not for use as an engine oil cooler. This has a two-pass, tube-in fin design. Basically, you can see, the oil would come in one tube, pass through the fins twice on its way out of the… see more >