w126 300sel Coolant replacement

[xaliscomex]

1988 300sel w126

Need to replace the coolant on my w126.
Any advice on the best way to bleed the air from the coolant system.

When I replace the coolant on my 1979 300sd, I park the car on my inclined driveway, remove the coolant reservoir tank cap, turn on the heater and rev the engine.

Any advice is greatly appreciated