RMI-25 Cooling System Treatment FAQ

RMI-25 Cooling System Treatment is a very low-cost, extremely effective defense against cooling system failure in all liquid-cooled engines. It is a total pour-in/drive-away system that removes rust, scale and corrosion, prolongs component life, prevents water pump and radiator failures. Cleans radiators, engine blocks, heater cores, hoses Inhibits rust, mineral deposits, erosion, pitting Lubricates water…

Yes! Among a host of other things, RMI-25 Cooling System Treatment restores the rust/corrosion inhibitor additives of the antifreeze/coolant that have degraded over time and have lost their ability to prevent rust and corrosion in the system. The inherent ‘freeze up’ protection properties of antifreeze do not degrade, and remain viable. Find out more ……

You will see corrosion material floating on the surface of the coolant fluid at the radiator cap neck or in the coolant recovery tank.  It can be flushed away by overflowing the radiator at the cap or coolant recovery tank. In extremely rusted systems in which rust penetration has occurred, the effectual cleaning action may…

The rust, mineral, and other deposits that RMI-25 Cooling System Treatment dissolves become a soft, floating harmless material in the cooling liquid. These deposits are purged from the system into the coolant recovery tank. On large diesel engines, the deposits are safely caught in the coolant filter where they can be manually removed when the…

Yes! Over 60% of water pump failures are caused by seal leakage. Normally, granulated rust and minerals circulate in the cooling system, acting as a grinding compound on your water pump seal and shaft, ultimately resulting in water pump failure. RMI-25 Cooling System Treatment dissolves these granules into a soft harmless matter, and as the…

Yes! RMI-25 Cooling System Treatment contains an active, concentrated Oxygen Scavenger component that binds the dissolved oxygen in an inert chemical reaction and eliminates it. This distinct action greatly reduces the potentially catastrophic damage caused by cavitation corrosion – the source of cylinder liner pitting. Find out more… Find Out More!

RMI-25 Cooling System Treatment is compatible with all forms of antifreeze, including high- and low-silicate versions, as well as propylene glycol and ethylene glycol. When used with waterless, alcohol-based coolant the overall benefits of RMI-25 and the coolant may be reduced. RMI-25 can be used in all types of radiators and is safe for all…

Yes it is! RMI-25 Cooling System Treatment is a perfect Supplemental Coolant Additive! What is a Supplemental Coolant Additive (SCA)? SCAs, or Supplemental Coolant Additives, are solutions added to the coolant stream to provide, as the name suggests, supplemental anti-corrosion and cavitation (or liner pitting) protection for diesel engines having pressed-in wet sleeve cylinders. Liner…

RMI-25 does not have an exact shelf life. If the bottle remains sealed, the product stays perfectly viable for over a year. Once the bottle is opened, it may slowly lose its effectiveness – primarily the oxygen scavenger component. It may also thicken as time progresses, though this isn’t a problem as it dilutes with…

How do I use RMI-25? Very simply! Pour the recommended dose of RMI-25 into the radiator and run the engine. You may have to remove some coolant/antifreeze to allow the space for the required amount of RMI-25. Radiator draining and refilling are usually not required.   How quickly does RMI-25 work? When added to coolant…