High-Performance Inhibited Ethylene Glycol Coolant for High-Load Gas Engines & Compression Infrastructure
Ultrakool SLH is a premium, high-purity inhibited ethylene glycol heat transfer fluid engineered specifically for stationary natural gas compression engines, field booster stations, and high-load gas processing plant loops. Its industry-leading formulation features an advanced nitrite-based inhibitor system designed to protect heavy-duty stationary gas engines running 24/7 under extreme thermal stress.
Formulated with virgin ethylene glycol base stock (containing less than 0.5% diethylene glycol by weight), Ultrakool SLH delivers maximum thermal conductivity and long-term fluid stability. Its specialized nitrite pre-charge provides continuous wet-sleeve cylinder liner cavitation protection for large stationary engines. Free of amine and ammonium compounds, it protects multi-metal loops containing steel, cast iron, copper, brass, and aluminum.
Availability: Made to Order
Lead Time: Ships in 2-5 business days
Pricing: Price on Request
Product Features
- High-Purity Virgin Glycol Base
- Uses premium virgin ethylene glycol containing less than 0.5% DEG by weight to maximize heat transfer efficiency and prevent fluid oxidation.
- Stationary Engine Cavitation Defense
- Heavy-duty nitrite inhibitor package applies a continuous protective film over cylinder walls to stop high-frequency vibration pitting on wet-sleeve liners.
- Surface-Wetting Agent Technology
- Modifies fluid surface tension so inhibitors penetrate metal micro-pores, producing smaller vapor bubbles that collapse gently without eroding metal.
- High-Temperature Thermal Stability
- Resists thermal breakdown and inhibitor drop-out in extreme operating environments, including high-load supercharged gas engine blocks and compressor jacket loops.
- Buffered Reserve Alkalinity
- Maintains a stable pH of 8.4–9.4 under continuous load, neutralizing acidic oxidation by-products and extending operational fluid life.
- Amine & Ammonium-Free
- Non-injurious to non-ferrous metals, protecting multi-alloy heat exchangers, copper coils, and aluminum engine components.
Applications Include
- Stationary natural gas compression engines (Waukesha, Caterpillar, Superior, Cooper-Bessemer)
- Field gas gathering compressor packages and booster station cooling loops
- Midstream gas processing plants, sweetening units, and refinery compressor systems
- High-load industrial process heat transfer loops requiring heavy-duty liner cavitation protection
*Our included analysis of coolant samples allows customers to monitor fluid condition via parameters such as inhibitor level, alkalinity, freeze point, glycol concentration, etc
Available Packaging
20L Pail
205L Drum
1000L Tote
FAQ
What makes Ultrakool SLH different from a general industrial HVAC glycol like Dynatherm?
While general industrial glycols like Dynatherm are cost-effective for closed heating loops, line heaters, and HVAC systems, Ultrakool SLH is specifically pre-charged with a heavy-duty nitrite inhibitor package. This nitrite film is essential for stationary natural gas engines to prevent wet-sleeve cylinder liner cavitation caused by intense engine vibration during continuous 24/7 load.
Is Ultrakool SLH the same as a mobile transport coolant like Global Extended Life HD?
No. Global Extended Life HD is a universal HOAT coolant engineered for mobile truck fleets, highway transport, and light-duty automotive radiators meeting ASTM D6210/D3306 standards. Ultrakool SLH is formulated specifically for heavy stationary industrial gas compression engines and gas plant process loops requiring a high-purity virgin ethylene glycol base with dedicated stationary engine chemistry.
Does Genesis offer other oilfield & midstream glycol fluids?
Yes. In addition to Ultrakool SLH for stationary gas engines and compressor loops, we supply Ultra TEG for gas contactor dehydration, as well as Dynatherm for line heaters and general facility heating. Explore our full range of Oilfield & Midstream Processing Glycols to find the right fluid for your field operations.



