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Old May 19th, 2014, 05:46 PM
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DIY new member, 2003 cooper s help

Hi everyone we just joined as my wife has herself a pink 2003 plate mini cooper s, so I am working on it refurbing the wheels, just serviced it and that sort of stuff.

then today got back to house parked up in the driveway, and a puddle has appeared underneath the front of car where radiator is, seems to be coolant so have jacked up and checked underneath and the radiator plastic end to the left as looking in seems to be pretty wet and the other side of the radiator at the top, there's a patch of the fins seem to be soaking wet also, so my conclusion is the radiator is knackered and a new one is required.

am pretty handy with a spanner and normally do all our own work and servicing etc, but wanted to ask first as new to these cars.

1. are these radiators bad for going or prone to leaking?
2. is there a best place all you guys get your parts in the UK? or just normal factors?
3. what coolant should we buy or is recommended as a full change will have to be done as radiator??

appreciate all and any help in advance.
thanks Grant
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Old May 19th, 2014, 06:47 PM
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Also am I maybe just as well fitting a brand new thermostat at the same time just encase this was the problem and back pressure burst the radiator, for the price of one maybe just as well while its apart?

not checked exactly where they are as of yet but normally always easy enough to get to?

Grant
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Old May 19th, 2014, 11:20 PM
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Not sure best place to get a radiator.
IFAIK, leaking radiators aren't common. So I'd get one from BMW depending on the price they'd want.

Might want to consider replacing the coolant expansion tank too, as they ARE prone to leak.

I got my coolant from BMW, but can't remember price, not expensive though.
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Old May 20th, 2014, 12:08 AM
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Hi ya

Personally if you can afford it put in a better rad

Airtec 1st Gen Mini Cooper S 40mm core alloy Radiator - Orranje - New MINI Performance & Styling Products

Or

MINI Cooper S R52/R53 Performance Aluminium Radiator, 2002-2008, by Mishimoto - Free Shipping in UK

Or buy one from mini don't waist your money on repo they don't last.

Coolant wise this

Halfords | Comma G48 Antifreeze and Coolant Conc 2L

Just take the time to bleed the system there's a few post about it

http://www.mini2.com/forum/maintenan...screw-plz.html

Also if your budget allows change the expansion tank as there rubbish and fail

MINI COOPER NEWS FEED, Mini Cooper Parts Catalog, Video Repair Tips, and Project Cars. | PROMINI.CO: Mini Cooper Repair Tip: Coolant System Problems

Change it to something like this

MINI COOPER NEWS FEED, Mini Cooper Parts Catalog, Video Repair Tips, and Project Cars. | PROMINI.CO: TECH TIP: MINI Cooper "S" Coolant Tank Upgrade - replace that old cracked plastic tank with a new aluminum version. Click here - to view this D.I.Y.

Hope this helps
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Old May 20th, 2014, 12:57 AM
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Thanks for the advice folks, I always use comma for coolant changes on the Subaru's, how much is required for one these mini's then around 4-5 litres?
also when you say replace the coolant expansion tank are you meaning just with another oe plastic one, not noticed any leakage around the plastic bottle, however it may burn off dry before its looked at if it is leaking, I will look in to it tomorrow.
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Old May 20th, 2014, 07:52 PM
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so would this coolant I found on eBay do the trick? anyone know what the capacity is of the cooling system, i.e. how much do buy and use? don't if the below is a tad dear or a good price?

ok so wont let me post a link either until I have 15 posts sop then its eBay item number 291056904561
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Old May 20th, 2014, 07:52 PM
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think I need to get to 15 posts to able to do a few things by the look of it
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Old May 20th, 2014, 07:57 PM
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got it down to 21.50 delivered for a 5 litre drum, think that's about as cheap as I will get it for the same stuff
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Old May 20th, 2014, 08:13 PM
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Quote: Originally Posted by wrx fifer (original)
Thanks for the advice folks, I always use comma for coolant changes on the Subaru's, how much is required for one these mini's then around 4-5 litres?
also when you say replace the coolant expansion tank are you meaning just with another oe plastic one, not noticed any leakage around the plastic bottle, however it may burn off dry before its looked at if it is leaking, I will look in to it tomorrow.

Hi ya

Sorry slow reply been up yo my neck in it.

2 lts of concentrate mix 50:50 will give you 4 lts which is plenty and a little left over for top ups as the system settles down

Halfords sell it for 13 for 2lts

http://www.halfords.com/webapp/wcs/s...egoryId_255224

My advice is get a after market coolant tank the oem ones are rubbish and fail.

MINI Cooper S - Coolant Expansion Tank Failure

https://www.promini.com/product-exec/product_id/8249

Hope this helps
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Old May 21st, 2014, 12:46 AM
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10 yr. old car, expect more.

Charlie Croker ,BRG 03 Cooper S, SCCA Solo, PDX, Time Trials, RoadRally, and Stella, 011 Oxford Grn Countryman S
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Old May 21st, 2014, 04:36 PM
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yeah I have read a few times now that the plastic header tanks are dodgy, the one in her car does look fine just now anyway, and no signs of leakage anywhere around about it, however I will bear it in mind and keep an eye out for a possible replacement one, normally we clean our engines up and upgrade the hoses and bits and pieces so they look half decent anyway, which normally means replacing random parts we have just not got round to that yet, just starting the bodywork, and refurbed the wheels the other day and done oil and filter and just getting to the engine now really
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Old May 21st, 2014, 04:47 PM
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that's perfect I just ordered the 2 Litres of it then and will do a 50/50 mix giving around the 4 litres roughly, thanks for the help, new radiator ordered and should be all done for the weekend as long as the parts arrive tomorrow/ Friday.

Grant
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Old May 21st, 2014, 06:59 PM
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No problem glad it helps
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