EliteCamaro94

I have a 1994 z28 and im going to be flushing out the red dexacool coolant and im wondering can i use the green stuff?

Badazz 97 TA

iTrader: (18)

yes. go right ahead. no problems at all switching

EliteCamaro94

alright thanks, another quick question, i have some kind of gunk floating in my coolant and i think its causing my car to overheat and not cool itself properly. The fans are working and the water cirulates in the radiator when i let the car warm up like the thermo is opening and stuff. So will a good flush to get all this crap out of the system help it to stop overheating?

PNYKLR-TA

iTrader: (1)

yea it should robbie, but sometimes there is alot of gunk and sediment build up at the bottom rows of the radiator that may be hard to get out.

also i was always told when you drain something like the coolant or oil it is better to do it when its warmer because when its warmer more of the gunk will come out, when its cool the gunk settles and hardens. but that just might be me blowing steam but it always sounded logical to me. have they still been having those thursday meets over on northern?

Badazz 97 TA

iTrader: (18)

if you do flush it out with cold water make sure your engine is cold also. cracking the block is no fun

1badzee

iTrader: (12)

I used straight distilled water with some water pump lubricant.. for like a year and a half now. Never had a problem.

sweet-94z28

iTrader: (30)

Definitely use either the green stuff or universal. Dexcool is bad news. Its kinda corrosive to gaskets. A 1994 should have green in it anyway. Just make sure you get all the red out because they do not mix.

lt1noob

iTrader: (4)

yep, ive got the green stuff and no problems yet. and from what i know its better than the red stuff anyway

EliteCamaro94

alright guys the red stuff is only in my car because thats what was in it when i bought it and multiple shops told me that their books say its supposed to be in there. But i have read before that alot of guys were running the green stuff cause its better. Thanks for all the advice i dont really have time to do this myself so im going to take it to a shop this weekend to get the work done. Im going to make sure they flush it all out before re filling the car with the green stuff.

ss.slp.ls1

iTrader: (36)

Either or is fine. I don't want to argue, but I have used both with no problems. 100% dexcool in my 97 SS for 150K miles. I don't think either has an advantage over the other.

cgroh89

iTrader: (15)

Im in college for auto tech and Ive heard nothing but bad things about Dex_cool

I personally run the Pro-Blend Coolant and my car did run a good 10 degrees cooler than it did with the Green stuff


I get it at work for like 15 bucks but I know its 30 at o Reilly's since I had to drain and re fill my block once and is pissed me off that I just ran over to that store and its twice as much

EliteCamaro94

well im in az and we dont have an orielly's i dont believe does either checker or autozone carry it?

ss.slp.ls1

iTrader: (36)

Just get the green stuff and run a 160* stat.

EliteCamaro94

when you run the 160 thermostat dont you have to get a tune or something i thought i read?

ss.slp.ls1

iTrader: (36)

Absolutely not. You can get a tune to change your fan settings to have them kick in at lower temperatures, but that has nothing to do with your stat.

EDIT: Or you can get a manual fan switch.

EliteCamaro94

alright cool, ill be doing that this weekend thanks for the help

cgroh89

iTrader: (15)

Manual Fan switch is the way to go imo or at least have a toggle spliced in with the Fan relay so on those hot days you can kick them on right when you start the car. . I bought my car tuned with alower t-stat

Though on my thirdgen I know I had put in a 160 and the loop status wouldnt change because it never fully warmed up I dont know if this is as much of an issue on the lt1s though I would let is hit closed loop and then turn them on

ss.slp.ls1

iTrader: (36)

What are you talking about? The stat is a mechanical valve, nothing to do with the PCM. Even if you have a 160* stat, after a prolonged period @ idle on a stock tune you will sit at 210*. If you tune your fan settings to a lower temperature, then your temps will stay lower. Same with a manual fan switch.
Fan settings are independent of the thermostat.