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-   Discovery II (https://landroverforums.com/forum/discovery-ii-18/)
-   -   Antifreeze types (https://landroverforums.com/forum/discovery-ii-18/antifreeze-types-40927/)

jkid 05-26-2011 12:39 PM


Originally Posted by jayman (Post 248223)
What is the safest way to dispose of the drained Dex-cool?

It's hard to find places that will take it. I'm told that the super Wal-mart's with service centers will take it, not sure though.

grandkodiak 05-26-2011 12:47 PM

Sears, and Advance Auto around here take back coolant. Some employees don't know it, or don't know they have the correct container, as most atleast know you CANT put it with thier oil tanks so they usually just say its not allowed. Ask for a manager, usually they have a 55 gallon drum just for coolant.

I'm planning on using Amsoil coolant myself, pricey, but its also nonreactive to Dex so that eliminates the fear of gum up contamination from an incomplete flush, and cuts the number of flush cycles :D if you can run 10 years ~100k miles with 100% dex, I dont think a pint or two residual will do much harm lol.

Spike555 05-26-2011 07:28 PM


Originally Posted by grandkodiak (Post 248235)

I'm planning on using Amsoil coolant myself, pricey, but its also nonreactive to Dex so that eliminates the fear of gum up contamination from an incomplete flush, and cuts the number of flush cycles :D if you can run 10 years ~100k miles with 100% dex, I dont think a pint or two residual will do much harm lol.

But you cannot go 10 yrs 150k with Dex-Cool, even Land Rover knows this, thats why your owners manual says to change the coolant in your DII every 36months or 45,000 miles.

Here is some fun reading.
Dexcool Pictures

Just Google Dex-Cool.

jkid 05-26-2011 09:27 PM


Originally Posted by grandkodiak (Post 248235)
Sears, and Advance Auto around here take back coolant. Some employees don't know it, or don't know they have the correct container, as most atleast know you CANT put it with thier oil tanks so they usually just say its not allowed. Ask for a manager, usually they have a 55 gallon drum just for coolant.

Ha ha, the guys at advance auto are the ones who told me to try Wal-mart.

jaydog101 05-26-2011 11:10 PM

Just flushed mine and replaced the t-stat. I also used the amsoil coolant with their "Dominator coolant boost" (amsoil's water wetter,) and am very pleased. I have not broke 200c since and use to run in the 200's all the time. My old t-stat did have one of the 4 holes clogged up.

But could not be happier with Amsoil antifreeze, and coolant boost.

grandkodiak 05-27-2011 09:41 AM

lol i didnt mean running the same batch for 10 years, im saying if the headgaskets can take dex for 10ish years before failing as a result of acid wash then it can take much much small residuals that always exist when flushing and changing fluids.

and those dex pics are what happens when you overheat it and mix it with the wrong stuff. i had dex in my 96 trans am since, 1996, and never had a problem related to the coolant. its more ****ty machining, assembly, inadequate thickness perhaps, crappy design complicating proper bleeding, and definatly the hugely lacking power/weight and constant 4x4 that cause these things to eat them up so quick IMO in a very aged 1950's Buick relative... dex might contribute, but i doubt the degree its rep has in the LR community. (lol that and the average new land rover owner doesnt know that powersteering fluid, brake fluid, coolant, and gasoline arent interchangable when it snows and they dont want to take thier 911 out)

grandkodiak 05-27-2011 09:45 AM

ps jaydog what kind of temps do you see average? mine drivin around towns spot on about 167-172F... thats on dex without any additives. i was going to throw in a bottle of water wetter for a month or so before swapping the thermo/coolant/gaskets to see if it actually does anything.

jaydog101 05-31-2011 01:41 AM

Man those temps are low, I am pretty sure our Tstat are 195f so if you are running temps that low you must have some modification to the cooling system or just a cooler Tstat.

I run around 188f to 193f on the Hwy and sometimes I will see it hit 195f but drops immediately. Around town I see it from 195-198f with the air on in stop and go traffic. I did see 200f today in a parking lot with the air on waiting for my wife, and it was 95 degrees out side, but dropped back down to 198f pretty quickly.

DarylJ 05-31-2011 07:33 AM


Originally Posted by jaydog101 (Post 248954)
Man those temps are low, I am pretty sure our Tstat are 195f

They begin to open at 179 and fully open at 204.

If he's got temps that low, he's likely running an inline thermostat mod with a 180 or 185 stat and a bypass. Or his coolant sensor is bad.


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