8 replies to this topic

[Pistonbroke66]

Late model mpi Rover cooper 1999

I need to change the antifreeze and I'm unsure as to whether I should replace with the red/orange OAT product or good old glycol Blue/green. Currently its green.

Anyone advise?

[Rabtmac]

Stick with the BLUE the orange stuff i believe is no good for older engines and dont ever mix the two.

[Gulfclubby]

Assuming you have the original copper/brass radiator, you should stick with blue or green.

[yanto]

Ive got the 5 year life span stuff from halfords, has the glyco in it and its pink, 2ltrs is £22 for vehicles from 1998 onwards. which is fine as the system only takes 4ltrs. flush the system out any way would be a good idea.

[WillRunci]

any using this new antifreeze stuff that never gets hot etc.

[Ipod]

I use OAT (Red/orange) as recomended in the haynes i think, and never had a problem with it.
Some others seem to think it tends to "sludge" but imo i recon they have mixed it with other types.
Iv been using OAT for 5 years or so, and its always nice and clean in the header tank.
I normally do a 50/50 mix with water.

If you use this, flush the system out then use the OAT, as said dont mix 2 different types, or it will sludge.

EDIT: mine is a 99mpi

Edited by Ipod, 03 February 2013 - 12:14 PM.

[nev_payne]

Should be blue glycol, 50/50 mix should see no discolouration/sludging.

[Ipod]

From Rover pdf...hmmm

Brake/Clutch Fluid
For topping-up Rover recommend the use of AP
New Premium Super DOT 4 brake fluid or Castrol
Universal DOT 4 brake/clutch fluid.
Anti-freeze solutions
The overall anti-freeze concentration should not fall,
by volume below 30% to ensure that the
anti-corrosion properties of the coolant are
maintained. Anti-freeze concentrations greater than
60% are not recommended as cooling efficiency will
be impaired.
Use UNIPART SUPERPLUS 3 ANTI-FREEZE AND
SUMMER COOLANT to protect the cooling system.
If this is not available, use an ethylene glycol based
anti-freeze, containing no methanol with
non-phosphate corrosion inhibitors suitable for use
in mixed metal engines to ensure the protection of
the cooling system against frost and corrosion

EDIT:- heres another thread about it, either can be used...only if the old is proppa flushed from the system.

http://www.theminifo...ze#entry2589432

As Ibrook states..all must the old antifreeze be got rid from the system, i drained the system (with heater matrix open) and refilled with clean water, ran for 20 mins and repeated about 4 or 5 times, draining between refills again, then filled with 50/50 water and OAT

Edited by Ipod, 05 February 2013 - 12:57 AM.

[dsgoody]

The MPI Car's all left the factory filled with Pink/Red OAT coolant I believe, but many owners still prefer to use traditional Blue/Green Glycol based Anti-Freeze.