Expansion tank split oil leak related? - MINI Cooper Forum
Go Back   MINI Cooper Forum > MINI Technical Forums > Maintenance & MINI Care

Maintenance & MINI Care
Find Sponsor products associated with this forum
Questions and advice on keeping your MINI in top shape, from engine oil to body wax

Mini2.com is the premier Mini Cooper Forum on the internet. Registered Users do not see the above ads.
LinkBack Thread Tools Rate Thread
  #1 (permalink)  
Old Feb 4th, 2013, 08:26 PM
MINI2 Newbie
Join Date: Feb 2013
Posts: 32
Local Time: 02:53 PM
United Kingdom
DIY Expansion tank split oil leak related?

Hi my wife's mini had a warning light come on a few days ago, she stopped immediately and had the AA out, they pressure tested the expansion tank and it was hissing/p1ssing water from the central joint, I understand this is a common failure and have ordered an ally header tank to replace the plastic piece of poo.
He also checked the oil and it was very low, I have hunted it down to what I believe is a leaking crank sensor seal (see my other post about this), my question is, are the two related? Would the low oil have caused the engine to get hot and boil up the water? Or is it likely to be something different and just happen to have come at same time?
What would you advise I check re the water, or is it just likely to be the split tank that has caused the overheating.
Normally I love chicken and I love eggs, but when it's a case of chicken or egg problems I am not so keen
Thanks in advance for any info you can provide.
Reply With Quote
Sponsored Links
  #2 (permalink)  
Old Feb 4th, 2013, 10:59 PM
MINI2 Newbie
Join Date: Feb 2013
Posts: 32
Local Time: 02:53 PM
United Kingdom

Just a thought has Evans power cool/race cool 180 been tried in the mini? Saw it on wheeler dealers a little while ago and seems great.
From there website
Protect your investment!
A waterless engine coolant specially formulated for performance vehicles. Race Cool 180 protects engine cooling systems from -40C to 180C. The unique properties prevent many of the problems associated with waterbased coolants such as Premature Detonation and Overheating.


No Water - No Overheating
Power Cool 180 has a boiling point of 180C and will not boilover.

No Water - No Corrosion
Water contains oxygen, oxygen allows corrosion. Race Cool 180 eliminates corrosion.

No Water - No Pressure
Power Cool 180 allows your cooling system to run at a lower pressure, reducing the strain on engine components.

No Water - No Liner Pitting
Power Cool 180 generates significantly less pitting when compared with all water based coolants.

No Water - More BHP
Power Cool 180 eliminates premature detonation associated with overheating.

* Please note: this is has been known as Race Cool 180

Note: comes in a 5, 10 and 25 litres bottles

Ideas and thoughts please

Reply With Quote
  #3 (permalink)  
Old Feb 4th, 2013, 11:07 PM
mab01uk's Avatar
MINI2 Master
Join Date: Nov 2006
Location: London
Posts: 5,777
Local Time: 02:53 PM
United Kingdom Male
Expansion tank split and oil leak are very unlikely to be related.
The split tank is likely the cause of overheating as the leaking away of any cooling system pressure causes the coolant to boil at a lower temperature. That is why the system is pressurised in the first place.
Reply With Quote
  #4 (permalink)  
Old Feb 5th, 2013, 08:14 AM
MINI2 Newbie
Join Date: Feb 2013
Posts: 32
Local Time: 02:53 PM
United Kingdom
cheers Mab new tank arrives tomorrow hopefully.
will advise how I get on.

tank just arrived and is now on the car, it looks the nutz need to get some coolant and refill the system

Last edited by Shanos; Feb 5th, 2013 at 10:55 AM.
Reply With Quote
  #5 (permalink)  
Old Feb 5th, 2013, 12:57 PM
mab01uk's Avatar
MINI2 Master
Join Date: Nov 2006
Location: London
Posts: 5,777
Local Time: 02:53 PM
United Kingdom Male
After refilling you may need to bleed the cooling system of air, if it got too low or into the heater matrix, details on how here:
Solving MINI Cooling Problems.......... - Forums
Reply With Quote
Thanks for this post from:
  #6 (permalink)  
Old Feb 5th, 2013, 02:22 PM
MINI2 Newbie
Join Date: Feb 2013
Posts: 32
Local Time: 02:53 PM
United Kingdom
just printed off the guide and will get on to it tomorrow, my friend has borrowed my halfrauds trade card so i will need to grab it back from him (don't fancy paying their full prices )
just wondered on the guide it advises service mode before draining down, can it be done without this?
Attached Thumbnails
Click image for larger version

Name:	20130205_161030.jpg
Views:	28
Size:	54.2 KB
ID:	165347  

Last edited by Shanos; Feb 5th, 2013 at 04:16 PM. Reason: added pic of alloy expansion tank now fitted
Reply With Quote
Sponsored Links

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

» Recent Threads
Anyone know what this knob does?
Dec 20th, 2014 12:19 PM
Last post by TomEdwards
Today 02:49 PM
10 Replies, 475 Views
Mini Cooper child car seats!!!ar
Feb 24th, 2011 04:31 PM
Last post by Silverado
Today 01:35 PM
4 Replies, 7,538 Views
Drivers windows help
Dec 16th, 2014 09:08 PM
by Scotta
Last post by quadmaniac
Today 12:23 PM
3 Replies, 368 Views
Mini Cooper cabriolet 2006 help
Today 10:35 AM
Last post by Ashpotter1991
Today 10:35 AM
0 Replies, 62 Views
Newbie help POWER SEEMS WEAK????
Yesterday 09:33 PM
Last post by Antb1986
Today 09:15 AM
1 Replies, 163 Views
Finance or lease?
Mar 19th, 2014 07:58 PM
by SeanC
Last post by Quinby
Today 08:26 AM
14 Replies, 3,880 Views
my mini before and after
Sep 10th, 2013 09:42 AM
Last post by RckStrGrl21
Today 06:57 AM
20 Replies, 7,190 Views
New Owner with a Question.
Dec 18th, 2014 01:44 AM
Last post by SteveB00
Yesterday 10:20 PM
2 Replies, 411 Views
2005 mini base starting issues
Yesterday 09:12 PM
Last post by ger2005mini
Yesterday 09:12 PM
0 Replies, 148 Views
Gearbox noise
Nov 30th, 2014 04:01 PM
by Tomdev
Last post by Tomdev
Yesterday 08:37 PM
4 Replies, 482 Views
2003 MINI cooper S
Yesterday 08:13 PM
Last post by Haakonnor
Yesterday 08:16 PM
1 Replies, 131 Views
PPI in Northern California?
Yesterday 07:26 PM
Last post by scrapple5
Yesterday 07:26 PM
0 Replies, 112 Views
Light loose steering then EML light. Possible hump back bridge issue
Dec 20th, 2014 04:44 PM
Last post by CCroker
Yesterday 07:13 PM
1 Replies, 306 Views
Clutch Slipping
Dec 14th, 2014 04:48 PM
Last post by CCroker
Yesterday 07:09 PM
3 Replies, 288 Views
Exterior light on top of boot door
Yesterday 06:33 PM
Last post by Fatzburger
Yesterday 06:33 PM
0 Replies, 123 Views
Key button Door Unlock
Dec 19th, 2014 06:48 PM
Last post by ssoliman
Yesterday 04:05 PM
2 Replies, 250 Views
Using Torque to locate HPFP issues
Yesterday 03:39 PM
by genik
Last post by genik
Yesterday 03:39 PM
0 Replies, 124 Views
2002 R50 cooper metallic noise at anything over idle
Yesterday 12:34 PM
Last post by Gonewest
Yesterday 12:34 PM
0 Replies, 148 Views
Help please: Humpback bridge whoops steering odd and EML light
Dec 20th, 2014 04:39 PM
Last post by The Nun
Yesterday 12:09 PM
1 Replies, 212 Views
Wanted: ride in a NRF shod R56 Cooper S
Yesterday 11:35 AM
by Farms
Last post by Farms
Yesterday 11:35 AM
0 Replies, 148 Views
» Premium
» Auto Insurance
Wheel & Tire Center

Powered by vBadvanced CMPS v3.2.1

All times are GMT. The time now is 02:53 PM.

Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.3.2