Switching Coolant
#1
10-28-2009, 05:14 PM
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Switching Coolant
In the next couple of months I plan on replacing the head gaskets on the '04 disco I picked up last week. I want to do as much as possible when I have everything taken apart and one of those things is switching coolant. Being that differnt types of coolant do not mix, do I need to replace the heater core, radiator, and all hoses to make sure no unwanted chemical reactions can occur? In addition to switching the coolant I plan on replacing the wires as well but is there any thing else I should consider doing while I have everything apart like replacing the water pump?
Thank you!
'04 Disco 77k
Thank you!
'04 Disco 77k
#2
10-28-2009, 07:08 PM
#4
10-28-2009, 08:08 PM
Right before you do the gaskets drain out the old coolant, fill with water, idle the engine with the heater on, idle for 20 min with the cap off the overflow tank.
Shut it down and let it cool for 15 min.
Drain.
Refill and repeat.
Keep doing this until nothing but clear water comes out.
Then do your gaskets.
http://sancarlosradiator.com/dex-cool.htm
Shut it down and let it cool for 15 min.
Drain.
Refill and repeat.
Keep doing this until nothing but clear water comes out.
Then do your gaskets.
http://sancarlosradiator.com/dex-cool.htm
#5
10-28-2009, 08:29 PM
#6
10-28-2009, 08:39 PM
Yes, flush with water and refill with either a 50/50 pre-mixed coolant or mix it yourself using distilled water.
As long as it is aluminum safe you can use anything you want.
You can flush with the garden hose but you MUST use distilled water in your final mix.
If you buy it pre-mixed they will warranty the cooling system and coolant, if you mix it yourself you are on your own.
As for you not having any leaks yet brook, great, good for you and more power to you bro.
Now here is alittle history, DI's have the same cooling system as a DII, all aluminum.
When the DI came out aluminum safe coolant had not been invented yet, so Rover said to change your coolant every 36 months or 30,000 miles, whichever is sooner.
Most people did not do this and the radiator corroded and clogged, hence the overheating issues on DI's starting around 90-100k.
The fix is a new radiator, there are plenty of threads on here where the DI was overheating and needed a new radiator.
Cooling system maintenance is just as important as changing the oil.
As long as it is aluminum safe you can use anything you want.
You can flush with the garden hose but you MUST use distilled water in your final mix.
If you buy it pre-mixed they will warranty the cooling system and coolant, if you mix it yourself you are on your own.
As for you not having any leaks yet brook, great, good for you and more power to you bro.
Now here is alittle history, DI's have the same cooling system as a DII, all aluminum.
When the DI came out aluminum safe coolant had not been invented yet, so Rover said to change your coolant every 36 months or 30,000 miles, whichever is sooner.
Most people did not do this and the radiator corroded and clogged, hence the overheating issues on DI's starting around 90-100k.
The fix is a new radiator, there are plenty of threads on here where the DI was overheating and needed a new radiator.
Cooling system maintenance is just as important as changing the oil.
#7
10-28-2009, 08:59 PM
Yes, flush with water and refill with either a 50/50 pre-mixed coolant or mix it yourself using distilled water.
As long as it is aluminum safe you can use anything you want.
You can flush with the garden hose but you MUST use distilled water in your final mix.
If you buy it pre-mixed they will warranty the cooling system and coolant, if you mix it yourself you are on your own.
As for you not having any leaks yet brook, great, good for you and more power to you bro.
Now here is alittle history, DI's have the same cooling system as a DII, all aluminum.
When the DI came out aluminum safe coolant had not been invented yet, so Rover said to change your coolant every 36 months or 30,000 miles, whichever is sooner.
Most people did not do this and the radiator corroded and clogged, hence the overheating issues on DI's starting around 90-100k.
The fix is a new radiator, there are plenty of threads on here where the DI was overheating and needed a new radiator.
Cooling system maintenance is just as important as changing the oil.
As long as it is aluminum safe you can use anything you want.
You can flush with the garden hose but you MUST use distilled water in your final mix.
If you buy it pre-mixed they will warranty the cooling system and coolant, if you mix it yourself you are on your own.
As for you not having any leaks yet brook, great, good for you and more power to you bro.
Now here is alittle history, DI's have the same cooling system as a DII, all aluminum.
When the DI came out aluminum safe coolant had not been invented yet, so Rover said to change your coolant every 36 months or 30,000 miles, whichever is sooner.
Most people did not do this and the radiator corroded and clogged, hence the overheating issues on DI's starting around 90-100k.
The fix is a new radiator, there are plenty of threads on here where the DI was overheating and needed a new radiator.
Cooling system maintenance is just as important as changing the oil.
thanks spike
#10
10-28-2009, 09:14 PM