I wasnt expecting much, as I'd been draining amd filling it almost every day for a week or so and was getting decently clear water with a very slight tinge for a few days by then.

But what came out was surprising. Yellowish fluid with an acidic smell. Like muddy water. And some solid rust particles along with it.

But what really surprised me was I tried squeezing the rad hoses and they were all pliable now, with no crunch at all!

It looks like it really did a good job of melting away rust buildup. I'm tempted to do another flush but I dont want to overdo it and spring a leak somewhere lol!

I've been draining and filling a few times now and the water is clearing up with only a slight tinge. I will do this till the water runs as clear as I can get it, then flush with distilled water a few times then fill with some MB 325 coolant and distilled water.

Overall a very positive experience so far with this product!