Frequently asked questions

A manual transmission like the NV4500 holds a mere 8.5 pints. In 4th gear, the transmission stays cool, but in 5th gear (overdrive) it can quickly heat up. There is just not enough gear oil capacity. It didn't matter what oil I used, it wasn't enough to reduce the heat. The solution to the heat problem? Extending the pto covers with aluminum (for cooling) to add 2 quarts of gear oil capacity. I quickly found out that with Fast Coolers on my NV4500, I could keep the temperatures under 200 degrees versus the previous 230 degrees.