2008 Acura TL Q&A

2008 Acura TL Question: coolant drain plug

On the Acura TL 3.2L, where is the coolant drain plug that drains the rest of the coolant from around the engine? I only get a little over 4 quarts from the reservoir and the radiator.The total capacity is about 1.73 to 2.0 gals. -
Answer 1
Is on the button of the radiator -
Answer 2
There should be a drain on the block as well but I cannot find its location in my information.. -
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Can anyone tell me where I can find the block drain so that I can flush the coolant system?