What is ULTRA LT coolant? As the great innovator of the water cooled PC industry now for over 5 years, Fluid XP is constantly researching a way to make a better product for all of our loyal users around the world. Fluid XP took the Ultra with z-7 concentrated coolant, that was introduced in 2007, which was formulated for experienced water cool PC enthusiasts to customized their coolant per use and made a new formulation designed to be ready right out of the bottle for anyone else. Ultra LT uses the same ingredients as our regular Ultra except the viscosity is much less so that it will work in any system no matter how small the tubing or how slow the pumping system. Everything else is the same, still comes in all the great UV and Non-UV colors and has the award winning patent pending z7 additive for biological control and its award winning corrosion protection. Best of all, it is very affordable and safe! Made from Non-Toxic base ingredients it still maintains its Non-Conductive rating that no other coolant on the planet can touch. Simply put, there is no other coolant at this price which gives you this kind of high performance cooling and features. You may have tried the rest so now use the best! Fluid XP+ is simply put the most advanced liquid cooling fluid on the market today. This is a sophisticated coolant that has been formulated under the strictest of conditions and is the only liquid coolant in the world that has been truly lab tested as 99.9% non-conductive and safe to use within computer applications. Fluid XP+ is our number one recommendation for liquid cooling systems, it is what the owner of ArcticMOD.com himself uses.. and if this isn't convincing enough please read on.. The History of Fluid XP+ Fluid XP+ was developed by a retired NASA scientist who has over 180 patents to his credit. He engineered it from a deicing formula which they used in aircrafts, later to be used in railroad switches. The first principal user of the formulation in regards to computer cooling was Delphi, in which they used it to cool there super computers. Later, the coolant was reformulated into Fluid XP+ for Integrity PC, to be tested with liquid cooled systems for high-end gaming PCs. It was also used in business workstations and servers which require great amounts of cooling and low maintenance at affordable prices. Since it was first released it has gone through various changes and now is better than ever. Integrity PC has found it to work quite well for its high performance systems and having the other properties it is ideal for home computer or office use.