I used milk pipeline cleaner,..stronger acid in a much bigger jug with a much smaller price,...... It is stronger so you have to be careful with it.......
Careful as in how? Where can you get milk pipeline cleaner and will it make a difference in dullness or shine compared to regular acid? How do you apply your milk pipeline cleaner?
I put it in a spray bottle and also it in a bucket and applied with a scrub brush,....left it on for maybe a minute and hoed it off with lots of water, reapplied as necessary.....It's the same stuff most milk haulers use on their trucks,....It can be bought at farm supply stores in gallon jugs with are usually cheaper than a small spray bottle of the stuff sold at a auto supply store... The stuff made for cars and trucks is diluted and will require some scrubbing,...Whereas the pipeline cleaner is very strong,..you must ware heavy rubber gloves and eye protection!!!... .
Not sure what kind it was,...But in my case I remember it was the same... That I don't know,...I was using a old plastic sprayer from a friends milk house,....He is the one that pointed out the pipeline cleaner to me....