is this Antifreeze good?
Burning Brakes
Joined: Mar 2010
Posts: 1,094
Likes: 68
From: Providence RI
Stick with green 50/50.
you can flush all you want but unless you drain the block you’re going to mix dex and 50/50.
no benefits with dex cool for your 91. Change it every 5 years and you’re good.
you can flush all you want but unless you drain the block you’re going to mix dex and 50/50.
no benefits with dex cool for your 91. Change it every 5 years and you’re good.
Thread Starter
Racer
Joined: Dec 2005
Posts: 374
Likes: 17
From: Dubai
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
Yeah? Have a look at the pics in THIS THREAD/POST ...scroll down the the 4th and 4th picture. Then tell me what a "bad choice" Dexcool has been for that 23 year old radiator....
True. Do we know he didn't pull the block drains?
Ah, non ELC coolant should be changed annually -which no one does and thus we see "my car is overheating" and "Heater core replacement" threads all the time, on here.
Dexcool (and most other ELC coolant) can go for 5 years....and there is the benefit of Dexcool in anyone's '91; less maintenance and/or better protection. Ford supposedly has a 20 year coolant out now. I'm keen.
Dexcool (and most other ELC coolant) can go for 5 years....and there is the benefit of Dexcool in anyone's '91; less maintenance and/or better protection. Ford supposedly has a 20 year coolant out now. I'm keen.
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Verdad Gallardo
Pro
Joined: Oct 2000
Posts: 616
Likes: 118
From: Alpharetta GA
Are Corvettes more prone to overheating than other cars? I rarely open my coolant system in any of my cars, and anytime I've had to replace hoses, thermostats, etc, coolant looks clean even after years.
Advanced
Joined: May 2019
Posts: 55
Likes: 11
Personally I'm a big proponent on using the orange Prestone DexCool. It can go longer between changes and has a better anticorrosive package. HOWEVER it is very very important that you completely flush you're cooling system if it is using anything other than DexCool. If you mix DexCool and regular antifreeze it's going to turn into brown sludge and clog yout radiator and cooling channels, so you have to get all of the old stuff out. That either means removing the knock sensors to get to the drain plugs and flushing with a garden hose or pulling the t-stat, putting the housing back on, hooking a shop-vac up to it and sticking a garden hose into the other end to pull all of the old coolant out.
As for leak-stop pellets, just don't. Fix whatever is leaking the right way instead of dumping metal and sludge into your cooling system.
As for leak-stop pellets, just don't. Fix whatever is leaking the right way instead of dumping metal and sludge into your cooling system.
Heel & Toe
Joined: Aug 2022
Posts: 17
Likes: 0
From: Umatilla Florida
Melting Slicks
Joined: Jul 2008
Posts: 2,269
Likes: 142
From: Ottawa Ontario
Heel & Toe
Joined: Aug 2022
Posts: 17
Likes: 0
From: Umatilla Florida
Antifreeze
I just purchased a 40k 95 convertible with LT-1,
as I am going through the car with new FSM I bought the dex cool antifreeze recommended in the FSM and then noticed the coolant in the car is green and looks new, it appears the previous owner? Changed to green stuff so I will return the dex coil to advance auto (after the hurricane) and put the green stuff back into it after changing out opti spark, injectors and pcm if necessary.
still acquiring tools and diagnostic skills, anyone have a code reader recommendation for a obd2 dlc and the obd1 computer, and a good injector tester? I want to avoid terminal damage using a paper clip.
as I am going through the car with new FSM I bought the dex cool antifreeze recommended in the FSM and then noticed the coolant in the car is green and looks new, it appears the previous owner? Changed to green stuff so I will return the dex coil to advance auto (after the hurricane) and put the green stuff back into it after changing out opti spark, injectors and pcm if necessary.
still acquiring tools and diagnostic skills, anyone have a code reader recommendation for a obd2 dlc and the obd1 computer, and a good injector tester? I want to avoid terminal damage using a paper clip.