So today i did throttle body cleaning, spark plugs cleaning, radiator flush 2 times with filtered home water. not satisfied but will do it again with distilled water. So far Alhumdulillah found no rusty water. it was clear water ALhumdulillah from radiator. After flush with distilled water. Will think of pouring coolant.
Never did this work ever before at home. And now I am confident to do this work at home. I took little more time for this work but trust me I do take care of those little things which these workshop people dont even bother to notice. InshaALLAH one day i will stop going to workshops.