I'm giving the boat a spring cleaning. My stainless gatlin mufflers have been neglected and have baked on hard water. So far I have sprayed them down with a vinegar/water solution, soaked and wiped down. Then hand buffed out with blue magic metal polish. It's coming out, but taking a long long time. I'd rather not machine buff since I still have the mufflers attached and don't want to sling all over heck. It almost seems like I need something a little more abrasive than rags to rub the vinegar/water and polishing compound? Any suggestions?

The Works toilet bowl cleaner.

+1 works better than anything else i have tried.

I use the "works" tub and tile cleaner in the spray bottle. Try it, I think you'll be pleasantly surprised

LCR works good for me.

almost any soap scum remover bathroom cleaner will work well, but the Works tub and tile cleaner has been on of my favorites.

I wonder how scrubbing bubbles in spray can would work? I'd love to let those little scrubber guys do the work for me.

Bon-Ami, I use it on my mufflers, rub rail and vinyl. It's a much milder abrasive than most other products and less expensive. Once my wife found out how good it works I have to buy 2 cans.

I use S.O.S. pads. Best trick EVER for pipes!!!! I local detail guy showed it to me. Once the Blue "stuff" is out of the pad, throw it away and get a new one. Just get pipes and pad wet and rub with S.O.S. pad.

Is the Works products safe to spray all willy nilly on the mufflers or do I need to be mindful of the overspray and dripping on the gel or painted drive?

Doesn't the SOS pads leave scratches?