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Old 03-17-2019, 04:41 AM
Join Date: Dec 2017
Location: Australia
Posts: 3
Theburn is on a distinguished road
E70 4.8l V8 Coolant Drain Point location (Engine block).

I have a 07 4.8l V8 E70 N62 engine. I am wondering if anyone would know the location of the engine block drain point for the coolant.
I have located the radiator drain point but I can only get 5 litres out of the car from here. The rest is in the engine block. Coolant pump is mechanical not electronic. I replaced the upper hose from the Radiator to the pump (leaking o-ring). I don't want to start disconnecting everything either to drain. If someone can tell me or show me where the plug is located.

Many Thanks

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Old 03-17-2019, 12:20 PM
ard ard is offline
Join Date: Mar 2006
Location: Sierra Foothills, California
Posts: 6,028
ard is on a distinguished road

Not sure it is all in the block. Heater core, hoses, etc.

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Old 03-17-2019, 07:33 PM
Join Date: Jan 2018
Location: Charleston, SC
Posts: 172
Baby Unicorn Taco is on a distinguished road
I have been draining my system multiples times over the past week. Max I can get is 7 liters plus whatever was under the valley pan. Not easy to drain it all. Use distilled to flush it. I've gone through 10 gallons of distilled to flush.

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Old 03-17-2019, 08:18 PM
Join Date: Dec 2017
Location: Australia
Posts: 3
Theburn is on a distinguished road
Thanks guys. Yes I have flushed and cycled the engine a few times now. I think I will have to dissemble more hoses to drain it all. Have to say it's a bad design for an engine. BMW must have purposely designed it like this. The hoses around the engine are easy to install, (Quick connect type), but not service of coolant, No, this needs special equipment and procedures. Haha.

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Old 03-23-2019, 07:11 AM
Join Date: Aug 2016
Location: Canada
Posts: 131
LightlyToasted is on a distinguished road
Block drain plug is #17
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