135,000 miles on the transmission. Every time we change the oil we change the trans filter and replace the fluid that was in the pan. 7 quarts of oil and a filter is cheap every couple of months for peace of mind. The trans fluid is real easy to change. The fluid always looks perfect and the pan is clean, no metal. We took the oil filter apart after the accident and there was nothing in the filter. I am told that would be the first sign of engine wearing out.
I have learned so much doing this. I know every bolt size, how to unhook the steering column, shifter, emergency brake and how to adjust it, I even learned how to straighten the floor. If anybody ever needs to know anything about these machines I probably have the answer. I have also learned that cab is really built well and the structure is way stronger than it looks. I know my truck has many good years left. I was always afraid the truck will rust away and fall apart soon. No way, it has many good years left.
Dave