I bought a Transmission temp gauge and also a oil temp gauge. Both are max tow series. I installed them on my 1998 Chev 1-ton It has only 29,000 miles on it. We only use it to pull our 5th wheel. I've wanted gauges for awhile and finally deceided it was time. When I saw your gauges I knew they were the ones for me! I installed them on the pillar,and they look great! Installation was pretty much straight forward. Thanks so much!