Standard recommendation concerning coolant for the Discovery are mid to high end brands. Regardless of brand selected it must be replaced every two years for maximum effectiveness.
you probably have a sticking valve lifter.
It is located in a radiator hose, on a Petrol this is on the left side of the fan when looking at the engine.
On a V8 if you a looking from the front of the car at the engine it is on the LHS, if you look closely at the engine you will see it sits about 10mm further back.
23.4 gallons (imperal)
Coolant recovery tank
why does the coolant only leak when engine is off on my 1999 grand am?
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For the 1999 Ford expedition it is recommended that you use the Ford Premium engine coolant which is green in color. You should not use the Ford extended life engine coolant which is orange in color.
Green coolantGreen coolant
Cut 2 inches off the Grill
The 1999 Range Rover 4.6 liter engine crank shaft sensor is located on the back of the engine. The crank shaft sensor is behind the rear engine cover.
Any brand coolant will work.