Mastercool 91049-128-4 Black/Yellow Flush Solvent, 4 Pack (1 Gallon)

I just flushed the lines and front Evap Core from a 2010 Dodge Grand Caravan. Fluid cleans well and evaporates fast. Evap Core was plugged, this flush broke through the plug very quickly. I didn't get any residual oily film like other users have reported. It did the job it's designed to do and did it well.

Worked very well and saved money on the gal. Size

Used this product and did nitrogen flush on an older line set that ran to the attic. It did clean but it’s very hard to remove it out of the lines and get it fully dry. Even after flushing, blowing out lines with nitrogen I could not get my microns under 1600. Ran half of my nitrogen bottle through the outflow line to the supply with both cores removed. Only using enough psi to feel it coming out of supply service port. Had to empty roughly 2 80cf bottles just to get everything out and down to proper microns. The Vaccum pump had little to no effect on boiling off any of this solution. I ran my pump on and off for 2 days with little effect. If you use this you better have a lot of nitrogen. Honest review here with changing my own ac system.

great product, poor delivery, this stuff is basically alcohol and acetone with some other chemicals..., delivery gave it upside down and lost 1/4 that destroyed the box and neighbors in this complex didn't appreciate it, but not this company's fault, just the inept driver...

This product thoroughly cleaned the AC system I was working on, I do recommend this product

worked great

Used half a gallon. Wiped the inside of the line and there was dirt. Seemed to have an oil.

Great Purchase