I read on this forum about this coolant additive and decided to give it a try on an old 96 Ford Taurus that I use as my back and forth to work car. The car only has 72,000 miles on it as I inherited it from an aunt in 2013 and it had 35,000 miles on it then. About a 2 years ago I noticed that my temperature gauge would move up rather quickly especially when the car was setting still and not moving. Temp would quickly shoot up to the high 220's unless the air condition was on or heater. I did several flushes with different products and installed a new water pump which helped some but I still kept an eye on the temp gauge. I decided to try the RMI-25 the first week of November and from what I can tell it has shown improvement in lowering my temp and that was before the cold weather decided to show up here in Texas. The car is running great and today I was stuck in stop and go traffic for almost 45 mins and my temp gauge never got to the half way point and I did not have to run the heater or air condition at all. Not saying this product was a cure all, but I do think it helped and at least did not cause any harm. I happened to be in Auto Zone on Sunday and they were having a clearance on a coolant additive called Nano MT which I bought as they were on sale for just a $1 so I bought a couple of bottles to try in the future . I know some are not fans of additives and I understand but thought I would share my experience. Thanks