I've replaced my car's coolant three times now. The first time was difficult. The second and third times I gave up removing the coolant drain plug and took my car to a local garage for them to put the car up on their lift so they could loosen the bolt for me. The bolts is to the left of the oil filter and you can hardly see it. As you can hardly see the drokking thing, removing it isn't easy 'cos of the awkward access.
After many failed frustrating attempts to remove the bolt, the bolt itself was getting a little worn and was rounding off, which doesn't help matters in the future. I bought a new one from Honda (£9.94 - 90001-PM3-003) and got a spare socket welded to it for £5.00.
Here's a photo of the finished product:
And here's a photo of the original which is a bit worn now:
