Anti Freeze Recommendations Please

triple e · 29th September 2013, 21:41

My Rover 2001 75 Connoisseur SE CDT is due a coolant change. Following a radiator and engine flush it will need 50% anti freeze added to the top up water.
I would appreciate advice on which anti freeze to use as Haynes suggest MG Rover originally used OAT (Organic Acid Technolgy), Haynes then suggest blue/green ethylene-glycol based type and my local Rover garage suggest 'the new yellow anti freeze'.
This is a simple query but I've been unable to get any reliable advice - apart from 'don't mix anti freeze in your car'.
Any advice will be much appreciated, perhaps including a good source of supply.

RPWC · 29th September 2013, 22:10

if doing the change and total flush, you can just put the normal blue antifreeze in, the info you have been given is correct, don't mix oat with blue. The two are totally incompatible with each other

SD1too · 29th September 2013, 22:13

John.

It's actually very simple. MG Rover's advice is that if you want to use a non-OAT antifreeze you can, just flush the cooling system first.

And Richard has beaten me to it!

Simon

triple e · 30th September 2013, 13:41

Much appreciated advice - are there real benefits with the OAT anti freeze compared with standard blue anti freeze? Which would you use?

Thanks
John

MangoMan · 30th September 2013, 14:25

I use this, when needed: Available at any Vauxhall Dealer @ £11.00/5lts.

SD1too · 30th September 2013, 19:31

Quote:

Originally Posted by triple e

.. are there real benefits with the OAT anti freeze compared with standard blue anti freeze?

John,

OAT is quoted as having a 5 year life (that's the corrosion inhibitors, not the antifreeze properties) whereas the blue stuff is a bit shorter.

Simon

crofts · 2nd October 2013, 05:51

If I remember correctly the change interval for blue is only 2 years.
Don't think you will find it all that much cheaper than 'pinkish' OAT and best price is for the Vauxhall OAT (Halforde ready mixed one of the most expensive)
Latest advice is for about a 30% mix not 50% to preserve seals and still protects down to way past usual lowest UK temperatures. (see 'Jules' post on this subject)

29th September 2013, 21:41	#1
triple e Regular poster Rover 75 Saloon, Connoisseur CDT SE Automatic 4 Door Join Date: Apr 2009 Location: Exeter Posts: 73 Thanks: 67 Thanked 1 Time in 1 Post	Anti Freeze Recommendations Please My Rover 2001 75 Connoisseur SE CDT is due a coolant change. Following a radiator and engine flush it will need 50% anti freeze added to the top up water. I would appreciate advice on which anti freeze to use as Haynes suggest MG Rover originally used OAT (Organic Acid Technolgy), Haynes then suggest blue/green ethylene-glycol based type and my local Rover garage suggest 'the new yellow anti freeze'. This is a simple query but I've been unable to get any reliable advice - apart from 'don't mix anti freeze in your car'. Any advice will be much appreciated, perhaps including a good source of supply.

29th September 2013, 22:10	#2
RPWC This is my second home 75 model car Join Date: Apr 2011 Location: Newcastle upon Tyne Posts: 20,193 Thanks: 4,008 Thanked 5,083 Times in 3,114 Posts	if doing the change and total flush, you can just put the normal blue antifreeze in, the info you have been given is correct, don't mix oat with blue. The two are totally incompatible with each other __________________ Cheers. Rich…

29th September 2013, 22:13	#3
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,486 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	John. It's actually very simple. MG Rover's advice is that if you want to use a non-OAT antifreeze you can, just flush the cooling system first. And Richard has beaten me to it! Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce.

30th September 2013, 13:41	#4
triple e Regular poster Rover 75 Saloon, Connoisseur CDT SE Automatic 4 Door Join Date: Apr 2009 Location: Exeter Posts: 73 Thanks: 67 Thanked 1 Time in 1 Post	Many thanks to you both Richard & Simon Much appreciated advice - are there real benefits with the OAT anti freeze compared with standard blue anti freeze? Which would you use? Thanks John

30th September 2013, 14:25	#5
MangoMan This is my second home Looking.... Join Date: Oct 2010 Location: England Posts: 10,911 Thanks: 862 Thanked 1,111 Times in 868 Posts	I use this, when needed: Available at any Vauxhall Dealer @ £11.00/5lts. __________________ *Regards, Bill - (MangoMan).* (Member 00854) http://i1110.photobucket.com/albums/...d.jpg~original

2nd October 2013, 05:51	#7
crofts I really should get out more....... 2003 Rover 75 Conn. SE Auto Tourer 131 ps CDTi Join Date: Nov 2006 Location: Bristol Posts: 2,512 Thanks: 38 Thanked 67 Times in 55 Posts	Anti-Freeze If I remember correctly the change interval for blue is only 2 years. Don't think you will find it all that much cheaper than 'pinkish' OAT and best price is for the Vauxhall OAT (Halforde ready mixed one of the most expensive) Latest advice is for about a 30% mix not 50% to preserve seals and still protects down to way past usual lowest UK temperatures. (see 'Jules' post on this subject) __________________ Rover 75 CDTi SE Connoisseur Tourer (2003) In desirable STARLIGHT SILVER (now restored to it's former glory with all the chrome !)