Cherokee Nation

I don't think so!!!!

victorf

No.....maybe he has a point!

C6 also comes with too many gauges to inform the driver with readouts rather then idiot lights - information an average driver don't need or understand. Reason so many endless entertaining "questions" over these forums!

Here, I take off thermostat to remove bottle neck and block plugs to further enhance the flush - to most people "What? Overkill!". Draining from radiator and refill with what comes out is enough and I had them refill with "Amsoil" or such and .....!

Many of these posting prove "Ignorance Is Bliss", Right?

Cherokee Nation

This is such a Great Forum,with out it, myself and many others would be lost.There are some people here that give expert information on (do it your self work).Thank You All and have a great Christmas....

Mad*Max

she's my baby!!!

Rebel 1

LS WON

Just kiddin
That would be almost as bad as using regular petrol oil in engine instead of synthetic?

Cherokee Nation

I knew you was not serious..

Cherokee Nation

In the past on my beaters i always pulled the stat & put the water hose in the rad & let the car run for (3 Beers) time,then add coolant & plain water..(Old school way)...

victorf

In addition to ^^^^^. I remove both block plugs, push water hose on one of the block plug hole and watch the water coming out from the opposite side plug hole, after I am satisfied, reverse the process for the opposite side. Overkill, right?

LS WON

Cherokee Nation

There is always more then one way to do it..Overkill.No"

Nifty C6

I'd be interested to know more about the coolant acidity test. Is there a kit that you can buy at auto parts stores? My reason for asking is that my 2006 coupe has only 7900 total miles, but next month it will be 7 years old. If the coolant is still good, I'd just as soon not change it.

jimmie jam

I'm in the same situation. My 07 will be 7 years old on Jan. 2 and only has 6,150 miles on it. I've also got an 03 Avalanche with 20,000 miles on it and it's original everything except a new battery in July of 08. I'm going to test them both. BTW, the 07's battery is still going strong.

LS WON

aka: OCD.

LS WON

I used to have Amsoil as coolant on first coolant change. That was $31.00 per gallon years ago.

Cherokee Nation

$31.00 a gal...

ROC OUT

I did the coolant change/flush yesterday in my 2007 Coupe based on what I read on this forum. Coolant had never been changed in my car before yesterday. Did not test for ph or anything else. Here are my observations.

-I could not find a traditonal radiator cap on top of or connected to the radiator on the LS2. Used the coolant reservoir to do the filling of the system.

- Opening the petcock on the bottom of the radiator to drain the system only nets you 8 quarts or 2 gallons of fluid. I know this from draining the radiator 4 times doing the initial drain of the coolant and then draining the distilled water that I used for the 3 flushes.

-After the initial drain of coolant, I pulled the coolant reservoir off the car and rinsed/flushed it with clear tap water to clean out any loose debris that was in the reservoir. This is very easy to do by just removing the two screws attaching it to the body and two hoses that send and receive fluid from the radiator.

-Two flushes with distilled water still produced drained fluid that was pink. The third flush with distilled water produced fluid that was virtually clear. So, per other posts on flushing the system, my recommendation is to do three, not two, if you want to see virtually clear fluid. Run the engine for several minutes between flushes to get the distilled water to circulate in the engine. Be sure to watch the DIC for coolant temperature and warnings about "Check Coolant Level."

-LS2 engine/coolant system holds a total of 12.6 quarts per the owner's and service manuals (which I have). Draining radiator from the petcock on bottom of radiator only produces 8 quarts. This means that there is still approximately 4.6 quarts of fluid that is not in the radiator. So, to refill and get a true 50/50 mix of Dex Cool, I bought two gallons of the Prestone GM-use Dex Cool from Wal-Mart, not the Prestone GM-use Dex Cool 50/50 mix version. Upon refill of system, I poured in one gallon of Dex Cool. At this point, I had almost a 50/50 mix of Dex Cool and distilled water. I mixed my own 50/50 mix of Dex Cool and distilled water from the second gallon of Dex Cool.

-Distilled water at Wal-Mart was 72 cents a gallon. Prestone GM-use Dex Cool was 14.27 a gallon. (Note, the Prestone GM-use Dex Cool 50/50 mixed version was 12.97 a gallon.)

-Overall, this is not a hard job to do at all. It does take time due to the draining, refilling, draining, etc. Catching and bottling the coolant/drained fluid is not an issue. I bought an open top Rhino drain pan from AutoZone for 8.99 which holds 5 gallons (20 quarts) of fluid. Has a pour spout and handle for convenience. Just catch fluid, close petcock, pour distilled water from gallon containers into reservoir and now you have two empty gallon jugs to pour the 8 quarts of drained coolant into. Do this each time you drain and refill and there is no issue. Auto parts stores in my area take old oil, coolant, etc. for recycling.

With any luck, I won't have any cooling problems in the future and I now know that I have clean fresh coolant in my car good for at least another five years.

Thanks to all on this forum that have provided info and advice based on experience in DIY vette maintenance projects.

Mike Green9

Thanks for the info.


M....

LS WON

Gearhead Jim

When running the engine between drain/refills, I think it's best to let the coolant temp get warm enough so the thermostat is fully open (~190'F). I believe there is some circulation even with the thermostat "closed", but it's so easy to let it get warmer...