Final Steps

Once the transmission was installed and everything in place, the transmission needed fluid. For this tranny Amsoil recommends their Torque Drive Synthetic ATF. Last but not least, with the truck having a Hydra Tuner from Power Hungry Performance and an engine from Swamps Performance, it needed some new tuning. It only took two tunes and a little bit of back and forth before this 7.3L was running to its true potential. 

Since then, we’ve put more than 2,000 miles on the transmission, both on interstate drives as well as up in the mountains on trails more suited to a Jeep or ATV. It’s safe to say that DieselSite has made believers out of Diesel Tech! By leveraging today’s technology to improve on a 15-year-old transmission, DieselSite can transform the transmission into something that’s more reliable and engineered to last. It’s also designed for the utmost in towing performance, which is good, because our sister magazine Dirt Toys has some equipment we’re dying to take for a spin. Finally, the 4R100 has vastly improved shift feel, thanks to a clutch material that handles extended and elevated temperatures without burning. Plus, the dang thing comes with a two-year unlimited mile warranty.