after i get mine flowing real good i put a ball valve on and plug the valve. when i need to drain it i screw in a ell and a long nipple and drain it right into a bucket no fuss, no muss and no mess. once a year i drain about a gallon of fluid out of it. if its all good and clean i just dump it back in the rad. its not original looking but its more functional that what came from the factory. here's the set up when the 228 was still in.
http://s1301.photobucket.com/user/B...mp;_suid=1374230892302030849790071747757