McKee's 37 MK37-691 Sio2 Auto Wash, 128 oz.

I used this to was my oversized Expedition SUV using a spray wand with a brush applicator. The reason I got this is because they advertise that the soap can dry onto the paint and do no harm. With a brush wand applicator it's easiest to soap up the whole vehicle before rinsing it off. Naturally the big problem is not letting the soap dry before finishing the washing part on a large vehicle. Putting their claim to the test, I washed my SUV on a bright sunny day, in the sun, and took my time which caused half the car to dry before I was able to rinse it off. The Soap WORKED AS ADVERTISED!!! It all rinsed off with just a spray of clean water, no scrubbing necessary.The soap did a really good job cleaning off all the dirt and accumulated salt (first wash after winter storm) without the need to scrub hard . I'm very impressed and will buy more o this stuff in the future. That may be some time as I found, even when using an in-line soap dispenser, a little of this stuff goes a long way! Suds up Great!

Bubbles up well, stayed bubbly, didn’t do a great job in the windows, everywhere else looked great.

Update 12/18/21After using this soap for 6 months I've noticed that if you have a coated car with a very slick surface like gtechnic or carpro sic this soap will alter the surface tension and it won't feel slick to the touch no more, it also affects the water behavior as well, so just keep that in mind.Had low expectations for this soap since I've tried many sio2 soaps before that leave residue on my dark blue paint, not this one, great maintenance soap, even after leaving the soap to dry on the paint it rinsed off effortlessly and left the car looking smooth and clean, good stuff!! This is my first McKees product I try after hearing good things about it. Foams really good in the foam canon.

Use this on my Mckees coated vehicles every other wash. Does as it says

I have no complaints about this soap as I use it on my coated vehicles. I do 3-4 ounces per 1000ml and get a good amount of foam. I blast off existing grime, do a pre-wash with foam, rinse, and then foam up again to do a contact wash.I top this soap with an SIO2-based quick detail spray and get really good results (color pop, hydrophobic, bugs and occasional bird poo don't require effort to remove, etc.)My ONLY gripe about this soap is its consistency. The viscosity I think is what I dislike the most as it comes out almost like a gel and takes a long time to pour and doesn't pour consistently. To get around this I use a measuring cup with water and then pour in the soap to make it easier to then pour into my foam canon.As much as I like this soap, for ease of use I'm going to switch back to a concentrate-style soap to make it easier and faster to measure and pour into my foam canon. I leave my measuring cup inverted over my foam cannon for 3-5 minutes so that most of the soap I measure is able to trickle into the foam canon.