coolant flush

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coolant flush

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coolant flush - 1/2/2008 9:59:36 AM

zerochills

Posts: 73
Joined: 4/12/2007
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is there any good method to flushing the cooling system?

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2000 Land Rover Disco II
2003 Volvo S40
2003 Jaguar X Type

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RE: coolant flush - 1/2/2008 4:37:27 PM

Disco Mike

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Joined: 4/27/2006
Status: offline

No, just remove a coolant hose at the t/stat, drain all out you can and refill with Dexcool. Might want to add a bottle of Purple Ice to the system for a more efficient system.

< Message edited by Disco Mike -- 1/2/2008 4:38:07 PM >

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Mike
Retired service manager. Member of the Solihull Society, NCLR club,past member of the SCLR club and Santa Barbara 4 Wheelers.
99 D2, 3" lift, lockers, H.D. axles, 4:11 gears, Custom front and rear bumpers, Warn winch, HID lights and an Engel 45.

(in reply to zerochills)

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RE: coolant flush - 1/3/2008 4:17:10 AM

zerochills

Posts: 73
Joined: 4/12/2007
Status: offline

Mike, I can not say whether or not DexCool has been used in the past or is currently in the system, for a while I was having a heavy truck mechanic service it in my shop. Since than I have taken over the service and am trying to update all service aspects. The coolant in my truck is red-heavy duty coolant, more likely the coolant used in our trucks. Is there a way to flush the system completely to ensure I have only DexCool or any other suggestions???

Thanks (oh, there is 136000 mi.)

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2000 Land Rover Disco II
2003 Volvo S40
2003 Jaguar X Type

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RE: coolant flush - 1/3/2008 5:51:54 AM

jkid

Posts: 598
Joined: 9/26/2007
Status: offline

I'll jump in here since this is the last thing I have to service on my truck, although I'm waiting a few months for Spring to do it (there is NO temperature outside right now). I have no experience with LR, but I notice in the RAVE that there is a drain plug on both sides of the engine, I have no idea how accessible they are. On other vehicles, I take out the blocks drain plug and unhook the lower radiator hose, letting everything drain. Then I start unhooking any hoses that are easy to get at and run very low pressure water through them (including the reservoir), letting the water drain out the bottom until it turns clear. This has worked great in the past, I'm not sure about a Land Rover though????

I currently have red fluid as well. I assume that replacing it with any type of OAT will be fine. Just don't mix it with a green inorganic coolant. It would be nice to know what the red is though...

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01 D2 SE (90K miles) Stock For now
1982 Mercedes 300SD (270k miles)

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RE: coolant flush - 1/3/2008 7:22:07 AM

geotrash

Posts: 277
Joined: 7/9/2007
From: Erie, CO
Status: offline

quote:

ORIGINAL: zerochills

is there any good method to flushing the cooling system?

Here's the procedure I've always used with my vehicles, for what it's worth. Should work just fine on a Land Rover.

Drain all the coolant you can from the system through the petcock in the radiator and/or the lower radiator hose.
Refill with fresh water and a bottle of Prestone cooling system flush, taking care to remove any air in the system if there is a plug for that purpose at the top of the engine. (Land Rover has one inline in the upper radiator hose)
Start engine and run to operating temperature +15 min
Drain water and flushing agent out
Refill with fresh (this time using distilled) water only and run to operating temperature
Drain water out again.
Get total cooling system volume from manual and add 1/2 of that amount in pure anti-freeze (in this case dexcool). Then top off with distilled water. This will create a 50/50 mixture in the system.
Take care to remove any air in the system
Voila!

Cheers,
Dave

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'04 Land Rover Discovery S - Pretty much stock everything - 40K miles
'05 Mini Cooper S - 45K miles
'99 Isuzu Rodeo LS 4WD - 131K miles
'64 Cessna 182 - IFR, STOL

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RE: coolant flush - 1/3/2008 10:07:33 AM

zerochills

Posts: 73
Joined: 4/12/2007
Status: offline

I'll give it a shot, Thanks

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2000 Land Rover Disco II
2003 Volvo S40
2003 Jaguar X Type

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RE: coolant flush - 1/3/2008 10:17:22 AM

Disco Mike

Posts: 10490
Joined: 4/27/2006
Status: offline

Get rid of the RED and get DexCool in there sooner then later, it is a got to be.

_____________________________

Mike
Retired service manager. Member of the Solihull Society, NCLR club,past member of the SCLR club and Santa Barbara 4 Wheelers.
99 D2, 3" lift, lockers, H.D. axles, 4:11 gears, Custom front and rear bumpers, Warn winch, HID lights and an Engel 45.

(in reply to zerochills)

Post #: 7