runutzzzzz

I added some Redline Water Wetter after my TT install and it dropped a good 9 + degrees!!! I was seeing 208-212 or so while cruizing in 95 degree weather now I'm at 199-201. Not bad for $7.00

Newton06

Put two bottles in - I saw an additional drop in temp.

cthusker

What was the temp after 2 bottles? Did you drain some coolant out before adding the waterwetter product?

TommyV

Use a turkey baster suction thingy in the overflow tank. Put in what you take out.

Newton06

I'm running between 172-176 degrees. The second bottle netted another 5 degree drop if I recall. I do have the 160 degree t-stat installed.

Yes, I removed coolant before adding the Water Wetter.

CMEPASU

Do you add the water wetter to the overflow tank or remove the radiator cap?

Hoonose

Lowering the temp isn't necessarily needed or even a good thing. The motor is designed to run at specific temps. I never had any trouble in all my years driving in AZ high temps. It's routinely 110 and above here all summer long.
Now for racing maybe the wetter is a good thing.

cthusker

I know there is a lot more torque available when my engine is around 200 versus 215-220. I simply don't like to see the temp that high because it puts a lot of extra strain on hoses, head gaskets, etc. I suspect the high temp is because of polution control not because it makes your engine run better. Cooler engine = more HP and torque....
I also suspect it will also slightly drop you oil temp! GM can tell me all they want about oil temps are ok up to 315 degs but I'm not buying it. Without syn oil you would be in big trouble running at those temps!! I think more good things happen with cooler engine temp than bad. I'm not talking about running at 160 or something like that... I figure 190 to 200 degs is hot enough IMO.

runutzzzzz

I added to the tank. Are you back in vegas? If I ever grew some ***** I'd move out there, I love Vegas! Hows the car? Need new tires yet?

Hoonose

What you say sounds sensible, but I'm still not so sure that it's really important. I know that dragsters like to get racing before they heat up too much, but I'd doubt there would be any seat-of-the-pants difference with our cars. Maybe the dyno guys could clue us in on typical HP losses with heating up.
And yes it sounds nice to be cooler, but fuel economy/efficiency may drop. And let me say this: In 6 years all the rubber and hoses under my C5's hood were all still as new as I could tell. That includes 6 of the hottest AZ summers!

runutzzzzz

I thought the car runs best at 192-200? I always ran at 192-200 BEFORE the TT, that's why I decided on water wetter!

cthusker

I've been reading a lot of Ranger's post and he sounds like he knows his stuff! He says there is a BIG difference if his Z is cooler when he drags it... He cools it down between every run as I understand it. I know that when my car hits 220 it just doesn't feel the same. You're right in that it's strictly seat of pants feeling with no data to support my hypothesis. I used to do a lot of drag racing and it was very important to keep the engine temps down to crank out max hp... However that was with much older technology so I don't know about today's engines. We used to actually ice them down at the drags trying to get better fuel density into the carbs. When the fuel got hot... forget..... they ran lousy! I'm going to give this stuff a try. From reading all these info on Red Line website it sure doesn't sound like it will hurt anything......

cbrf4i1

one of the best thing to use for the cooling system, been using it for over 12 years

runutzzzzz

When I did my baseline dyno I gained about 20 HP from 210-192

Hoonose

Good info!
Now one needs to run before and after with the wetter...

purple heart

I tend to agree; next week I am getting my car dyno'd and although I'm leaving in the Stock thermostat(OEM), I asked the programmer to set the fans to come on at, right now I'm thinking about 200.
just my .02 cents

CMEPASU

Oh yeah, got back to Vegas same night I picked the car up...Twin turbos are so quick I actually got here before I left

I'm not doing tires until I do the rear end. I've got to take some picks and post a new thread here soon...Just got back from the Chevy dealership, added to the LS2 stable and picked up a Trailblazer SS for the wife...Man, that's a sweet truck.

Later, thanks for the info on the water wetter, I'll be doing that next.


Gary

shurite44

In my C5 I used a 160 Tstat and lowered fans so I could launch at 180. That was optimum for me. Compared to launching over 210 or so you could save a maybe half a tenth at the most with a LS1. I am planning to do the same with the LS2 after I do a test and tune night to figure out my best launch temp.

I am hoping to get some baseline stock runs in next week, then the mods start.

mlongo99

You don't have a choice because there is no radiator cap

shurite44

Any of you guys ever use the product called 40 below??