Quote:
Originally Posted by AlpineE93
Sorry for resurrecting an old thread, but I plan on doing this next week. On my e93 328, after filling the cooling system, you turn the accessories on in the car, hold the gas pedal down for 30 seconds and the water pump will run about a 10-15min cycle to bleed all the aur out of the system. Is that not an option on the S65?
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Quote:
Originally Posted by Theodore
The 328 has an electric drive water pump, the S65 has a mechanically driven water pump so you have to run the engine to circulate the coolant through the system.
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do that without adding too much thermal load to the car and you'll be fine. after letting it idle for some minutes, opening and closing the vent/bleeding "bolt" at the top of the expansion tank, turn it off, let it cool down, refill the expansion tank.
go for a ride, take a bottle of diluted coolant. if the level drops too much, it will throw a warning on the dash. if it doesn't, keep checking level after cooling down, until it stops to drop.