bmw5541
New member
Not only did he only use 1 bucket, but he didn't use a Grit Guard. I actually do a 3BM with GG to do an ONR. The third is for the wheels and wells. However, if you are only going to use one bucket, you really should use the Grit Guard. If not, when you rince your wash media , you are putting all the crud back into the ONR, therefore, back into the wash media, and then you risk scratching the paint.