Drain plug on lower left hand side of radiator when looking from drivers seat. Turn heater to hot.
Open drain plug let it run till it stops, refit, fill with water, run engine for short while, stop engine, open drain plug and repeat until clear water comes out the radiator. If you have access to a hose pipe put that in the filler with the drain open then close the drain and run the engine.
Drain again and refill with 50/50 coolant. Test run and check level.
It's what I did on my D5 and had no problems.
I prefer to calculate 50% of capacity and add neat coolant then fill with water, that way any water in the system is taken into calculations and a true 50/50 mix obtained.
On my P1 I did get a slight air lock, warmed the car up on a test run stopped and opened the filler gently, gurgling and spluttering and water level dropped in header tank as airlock cleared, filled to mark and no problems in the 12 years I had the car.
Paul.
|