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tubman · 04-11-2019, 06:31 AM

To be perfectly clear, "Rust-911" and "Evaporust", while "Chelates" are NOT citric acid based. I mixed up a batch of citric acid and tested it with pH test strips. it tested out as quite acidic. When I checked "Evaporust" the same way, it tested absolutely neutral. It's time to put this one to rest.

04-11-2019, 06:31 AM	#20
tubman Senior Member Join Date: Dec 2013 Location: Minnesota, Florida Keys Posts: 10,319	Re: White vinegar as radiator flush To be perfectly clear, "Rust-911" and "Evaporust", while "Chelates" are NOT citric acid based. I mixed up a batch of citric acid and tested it with pH test strips. it tested out as quite acidic. When I checked "Evaporust" the same way, it tested absolutely neutral. It's time to put this one to rest.