I added this bottle of Cool Down to a mostly water/green-coolant mix through one of the upper radiator hoses.

It took about 1/8 of a tank of fuel before I really saw a difference. Only did a cursory bleed.

Previously, my idle would hit 198 and my highway cruise temp would swing between 194 and 196.

Now it seems to be holding at 189 at idle while parked on hot black asphalt in the mid-day Alabama sun, and temp drops to as low as 183 degrees F at 70 mph highway cruise.

I have no affiliation. I don't care if you use or don't use this product, I'm just providing a data-point for Disco 2 drivers.

No, it doesn't deliver the promised -30F temp drop, but come on, who would have really believed that marketing claim anyway?!

Maybe you can score 6 degrees F if you use it. I have no idea how it would work with red coolant or a high green coolant and low water percentage mix.

It has no anti-freeze properties, FYI. Also appears to be deadly poisonous, so ummmm, don't drink it (or even sniff it).

Good luck!








EDIT: I have a 180F thermostat installed

 

 

Interesting

 

I lost track of what the video was about after Evelyn's intro. lol

 

I've used the Royal Purple, Red Line, and HyperLube additive that does the same thing. In my H3 Alpha with the 5.3L V8 I saw like 5-6F difference and like No Doubt said 5-6F is 5-6F less and every bit counts.

I've used it in LR's with no real difference, but it does contain additives to condition the coolant so it's not a bad thing to add anyways.

VP makes good stuff and so does Lucas IMHO (their power steering stop leak saved every RRC/D1 I ever owned from pissing out of the Power Steering Box).