well, i've put in the entire bottle, so far ( 4 months), i don't see any different , nothing happend, everything were just as normal as before.

 

How would you notice a 5-10 degree drop in your radiator?

 

By, as in the butt dyno, using the butt thermometer. Ewwwwwww.

 

You guys kill me!!!!
Go back to school and take a good thermodynamics class.

I think you are deluding yourselves into thinking your thermostat on the cooling system will react differently with one chemical mix vs another.

Your system will always attempt to normalize around 180 degrees.
Only when you have exceeded the heat capacity for your system will the temp go above the thermostat full open setting. And then you will notice the temp fluctuating with RPM and forward speed. Since I have not read a post yet where the 8 overheats (chime in Aussie guys!)...you guys are just wasting your money!!!!

If you still insist on buying it, I have another product for you!
Guaranteed to boost your horspower by 30+ at the wheels!
It makes the air airier!
Made from genuine cow farts collected midday from a Texas cattle ranch!
Its the airiest air on the planet!!!!
Only $30 a bottle and a direct replacement for your NOX system!!!!!

Just send me $30 and Ill hook you up!!!!
:D

 

The temp gauge is not just an idiot light, it works.

I had a cooling fan problem, watched the gauge go up, up, and away!
Works pretty well!
.
.
.
doc

 

Sure, from a system-level things will be the same, but do you discount the alleged benefits of reducing localized hot-spots?

 

True, to the best of my knowledge, no-one has overheated an RX-8 in Australia.....and it gets pretty hot here. 105 deg is not uncommon in Summer.

 

.. and we only have one oil cooler... not that it would have a direct affect on coolant temp (only indirect).

 

i think the stock cooling system is more than capable of handling a stock Renesis.

just keep the coolant fresh and topped off and you should have no problem.

 

I used it in my 3rd gen. and it seemed to work. No more steam from the overflow tank on hot days FWIW. No scientific data, however.