We just wanted to let you know how much success we’ve had using your product. We have a hydraulic grout pump that gets up into the 200-degree temperature range during pumping. Over the past 17 years that we’ve been in business, we have consistently had the same overheating problem with our pumps. We have tried everything, even going so far as to install an external cooling system, but with no good results. Prolong has really helped. We added 4 gallons to our pumps 45-gallon reservoir and your product actually dropped the operating temperature of the oil by 50 degrees! We would highly recommend Prolong in any hydraulic system.
Art Methey, Vice President
K.D. Masonry Corporation, El Cajon, California