Hi all, new to the forum and thank you all for such great info and tutorials. I the the V8 2003 Tundra. I didn't see any diy on coolling system flushes. It looks easy to disconnect and flush out the heater core and radiator, but the engine block seems to only have access at the the top of the engine. Are there plugs near the bottom of the block somewhere to allow for a thorough release of old coolant? Thanks in advance.