I noticed a 20 degree difference in the Toy and a 17 degree difference in the jeep.
Water wetter only yeilded a 5 degree difference in the Toy.I didnt use it in the jeep so I cant give any specs on it in that application.Once I noticed the difference in the Toy I had to put it in the jeep.
Make sure you rinse out your cooling system to remove any contaminents.I used apple cider vinegar and water then flushed with fresh water before using the Engine Ice.

In the summer here it can get as hot as 120+ F and about 150F + on the pavement.I do a good bit of city driving shuffling kids back and forth to school etc. and the occasional offroad excursion where the truck often experiances long periods of running at idle with the AC going full blast,slow 4 wheeling etc..
Ive never had a cooling problem but gave it a try based on the principal that cooler operating temps assist in reducing wear and fatigue on the motor.

Im not one that is easily convinced "Miracle products" work,most are a waste of my hard earned dollar,but. I can tell you this product works!!

 

when you say 20 degrees, are you saying that your truck was overheating 20 degrees, and putting this stuff in helped it stay at the thermostat temp?

 

No,I havent had an over heating problem.
I had a 20 degree difference from normal operating temp. which may have been a little high due to the temperatures here in the summer.
The temp also seems to stay more consistant when the truck is put under a load,IE: heavy stop and go traffic,running at idle for long periods etc..

 

I always try to stay with what the manufacturer recommends. Its designed for Toyota's so it must have everything to keep it running a long time, I use all OEM parts (and use synthetic oils).

My dealer must be giving me good deals since I go there so much, because he only charged me $7 for a gallon of red coolant.

 

My runner's old and I have no idea what the conditions of the seals are so I think I may run Prestone through it to make sure I don't have any serious leaks and then eventually replace that with Toyota red.

Anyone see anything wrong with this? Would a full flush be necessary? I kind of know what answer to expect but I'm going to ask anyway