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Discussion Starter #1
hi,

is the best coolant to use whatever the manual says? (haven't looked yet) or have people found something else to be better?

It's for a 1998 4.6 HSE.

I've got plenty of old style anti-freeze but I'm guessing it's supposed to be green or orange stuff?
 

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2002-2005 Range Rover MkIII / L322
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Use whatever is in there.

We had this discussion a few months back, and there wasn't really a clear cut answer...but a couple of key point were:

Don't mix the types, as it may speed up corrosion.
Use aluminum (not aluminium, you friggin brits) safe coolant.
Green, orange, pink, yellow, long-life, is all confusing.
 

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Discussion Starter #3
Thanks - I'll try harder to find that topic,

It's currently not got any in so can't match what's there!
 

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2002-2005 Range Rover MkIII / L322
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All the better then. Try to flush out the remaining with some distilled water, then add whatever the hell aluminum safe (pretty much any modern coolant) stuff you want.
 

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kmagnuss said:
All the better then. Try to flush out the remaining with some distilled water, then add whatever the hell aluminum safe (pretty much any modern coolant) stuff you want.
Mixed with distilled (battery) water. ;)
 

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94 - 99 - green / blue stuff
00 - 02 - red stuff.... (long life)
 

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2010-2012 Range Rover MkIII / L322
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Er, close. At least according to Land Rover.

Early vehicles - Ethylene glycol (2 year life)
BMW era models - OAT type (5 year life) - DiscoveryII, Thor p38 etc...
Post BMW/Ford - G48 extended life Ethylene Glycol based coolant (5 year life)

The LR bible suggests replacing the OAT with G48 in certain engines, or at least not reusing OAT after a drain/refill.

It gave much such headache, I just buy in the Genuine Part coolants in 20 ltr packs now and do what the GTR tells me to do. :doh:
 

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My local stealer has both the red LR stuff as well as Peak Global, which they say is LR approved. I found the Peak Global at Pep Boys and did some diligence on it and it does seem to be good stuff. I also run it in my other cars with no ill-effects. It's a yellowish color, BTW.
 

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Discussion Starter #9
So I take it the old style blue stuff I've got is no good for this engine then?

And as I have it empty at the moment and a new radiator to go on, that I should really fill with the red stuff?

I was surprised to see the red stuff was only 5 year, the last car I had with red stuff was a Toyota and there red stuff was called 4life and it was intended to last forever in there as far as I am aware.
 

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2002-2005 Range Rover MkIII / L322
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Liquids lasting 'forever' in a car is a marketing gimmick. Same thing for the MKIII Rr's and their 'lifetime' tranny fluid.
 

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2010-2012 Range Rover MkIII / L322
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It's your choice. If you want it by the book, use OAT in the Thor engine. Otherwise, use any of the others. Maybe consider spending the extra on some Water Wetter of other thermal reducing liquid if you use the G48 type or the standard type?

Also make sure you get a marker and write the type of coolant used on the reservoir. Remove the OAT Only tag on the top and write on the type you've used. Again, if you've used Genuine Part coolant, just write the part number on it. Any specialist should have access to MicroCat and be able to find the exact coolant used, right down to the size of the bottle used.
 

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i've been using prestone oat dexcool coolant (orange) in the callaway with good results. can't complain.
 

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I just topped of my 2000 HSE with some Prestone yellow bottle "any make any model mix" aluminum engine safe yellow coolant.
 
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