Highly refined alkaline detergents break down old waxes and silicone oils for a thorough clean
Surface-safe formula is safe for all exterior surfaces, preventing damage during prepping
High-foaming action encapsulates dirt and grit, reducing swirl marks and scratches
Freely rinses off, leaving paint clean, shiny, and ready for clay or polishing
Can be used with traditional bucket or foam gun application methods
Summarized by Shop
Create a clean slate for your wax, sealant, or coating McKee's 37 Coating Prep Auto Wash is a powerful detergent that strips remaining traces of previously applied waxes and sealants, leaving your vehicle squeaky clean for the next step in detailing. By breaking down old waxes and silicone oils, the next step you perform in the detailing
Volume
16 fl oz (0.5 L) and 128 oz (3.8 L) options
Color
Clear
Package Type
Plastic bottle
Application Area
Exterior
Vehicle Type
Car
Form
Liquid
Summarized by Shop
4.9
11 ratings
5
4
3
2
1
another great soap from McKees. works great removing old wax ect…
S
Sean · April 2, 2026
Great
Cool product to strip junk.
J
Juan · September 10, 2024
It sure does help.
I was expecting more from this product. Maybe I was using it improperly. I used McKees37 Xtreme iron remover first,then I used McKees37 Prep Auto Wash expecting it to remove previously applied waxes and sealants to be squeaky clean. I would say it did that to about 80% of the vehicle, had to get the last 20% with another product.