Capacities (page 2 of 2)

Organic Acid Technology (OAT) anti-freeze Vehicles from Vin No: RD520013 use Unipart OAT (XLC) coolant which is Orange/Pink in colour. Vehicles using OAT anti-freeze are identified by a label attached around the expansion tank filler neck - see illustration.

CAUTION: The anti-freeze used in the cooling systems of later cars contains OAT corrosion inhibitors. This anti-freeze must not be used with any other anti-freeze and must not be used as a replacement in cooling systems which previously contained anti-freeze not of this type.

Use UNIPART OAT Anti-freeze and Summer Coolant or any ethylene glycol based anti-freeze (containing no methanol) with only OAT corrosion inhibitors, to protect the cooling system.

Upgrading coolant

For future servicing convenience, it may be desirable to update the specified coolant in an earlier vehicle by replacing it with Unipart OAT (XLC). This is permissible, provided that the cooling system is first drained and flushed at low pressure as described in the Workshop Manual - Repair No: 26.10.01.

When Unipart OAT (XLC) coolant has been added to such a vehicle, it will be necessary to replace the existing black filler neck label with the OAT warning label (part No: PAK100410A), to indicate the coolant specification has been changed.

All vehicles

The cooling system should be drained, flushed and refilled with the correct amount of anti-freeze solution at the intervals given on the Service Maintenance Check Sheet.

After filling with anti-freeze solution, attach a warning label to a prominent position on the vehicle stating the type of anti-freeze contained in the cooling system to ensure that the correct type is used for topping-up.

The recommended quantities of anti-freeze for different degrees of frost protection are:

Only anti-freeze containing OAT corrosion inhibitors should be used. Do not top-up or refill cooling system with any other type of anti-freeze.

In an emergency, if anti-freeze to this specification is not available, top-up the cooling system with clean water only, but be aware of the resultant reduction in frost protection. The correct anti-freeze concentration must be restored as soon as possible.