I use about anything to clean my ML. I'll use hot soapy water for my breech plug. #13 bore cleaner, windshield washer fluid and rubbing alcohol mixed, rusty duck, or T7 bore cleaner for my bore and the threads for my breech plug. I use both sides of my patches--wet and dry til it's clean. Sometimes my last wet patch is plain 50-91% isopropyl alcohol, then a couple dry passes. Grease your breech plug threads and re-install it, then use regular gun oil (I use rem-oil) to lubricate your bore and all metal surfaces. Some guys don't even store the breech plug in the gun, they'll leave the action open and drop the Bplug in engine oil.

Only things you have to remember--clean it good, then oil/grease it and it should be fine.