This letter was written to inform you about the experiences we have encountered using Prolong in two of our cranes. Crane #1 is a 140-ton TMS 1400 Grove hydraulic crane. We put a 10% solution in the upper and lower engines… our engine temperature dropped from around 200 to 205 degrees to around 180 to 185 degrees under identical working conditions. Also our planetaries, one in particular was running around 200 to 270 degrees. Now, after Prolong, the temperature is about 145 to 170 degrees, a 100 degree drop or more, unbelievable.
David W. Landreth
Marks Crane & Rigging, Odessa, Texas