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slowfinger
02-07-2014, 11:56 AM
We bought some 85% phosphoric acid from Dudadiesel.com. What is the mixture with water porportion to remove rust from trifive metal parts? And do you add acid to the water or vice versa? can't remember, been awhile since we used this stuff! I know there was an article here somewhere that they discussed this. Help.:)

chevynut
02-07-2014, 01:37 PM
Always add acid to water so the concentration goes up slowly. I read elsewhere that a 20-30% solution works good for rust removal.

slowfinger
02-08-2014, 12:10 PM
Thanks Buddy! Sounds like you've done your share! Geo.