GReddy/GREX oil coolers are an excellent addition, and are especially effective in harsh driving environments. By using a similar inner-fin core design as our famous intercoolers, we are able to increase oil capacity, decrease oil temperatures, and extend engine and oil life. Our systems also offer an internal (or external) thermostat (opening range 75o-82oC) to allow for quick engine warm up. The efficient core and durable steel-braided lines ensure good flow and a leak free installation.