Maintaining Your McLaren
Fluid Topping Up
5.6
Coolant
Coolant is a mixture of water and
antifreeze/corrosion inhibitor. Only check
the coolant when the vehicle is positioned
on level ground and the engine is cool.
Topping up the coolant
WARNING: The cooling system is
pressurized. Only unscrew the cap
when the engine is cool. You could
be scalded by hot escaping coolant if
you attempt to unscrew the cap
whilst the engine is still warm.
WARNING: Coolant is highly
flammable. Fire, naked flames and
smoking are prohibited when
handling coolant.
WARNING: Coolant is toxic. Keep
containers sealed and away from
children. If coolant is accidentally
consumed, seek medical help
straight away.
WARNING: Never top up the engine
oil and the coolant at the same time
as there is a risk of cross
contamination.
WARNING: If the engine is stopped
due to the Eco Start-Stop System
you should be aware that the engine
may restart without warning.
NOTE: The engine must be switched
off before carrying out the coolant
level check and top up process.
Coupe
1. Open the service cover.
See Service Cover - Coupe and Spider,
page 1.13.
See Service Cover - GT, page 1.14.
2. Slowly unscrew the cap by half a turn
anti-clockwise and allow excess
pressure to escape.
3. Unscrew the cap fully and remove it.
GT
4. The coolant level is correct when it is
between the lower and upper steps
inside the filler neck.
5. Top up if necessary.
p13.book Page 6 Wednesday, April 26, 2017 9:22 PM
Summary of Contents for coupe series
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