Used this to clean the engine bay of an SUV that lives outside after winter and it was spotless prefoam. Also worked well in doorjambs, and wheel wells to get out all the dirt and grit from winter. A little goes a long way, bottle will last a long time.
This is probably the most versatile cleaner. Dilute it and use it for wheels/tires, wheel wells, engine compartment, interior, exterior, plastic, upholstery and more. Great for use around the house as well. A little goes a long way so pay attention to the dilution ratios and you'll be set.
W99 it the toughest All-purpose Degreaser out there. I use W99 to clean my engine bay. I dilute with a ratio of 1:3, spray it on, let it sit for a minute or two, and rinse it off. Engine bay looks like new. You can't beat that.
There are too many uses for W99 to list here! Another great product from 1Z. Given the ability to dilute W99 to suit the cleaning needs, I have several bottles mixed for both automotive and household use.