Bit hesitant about replying after getting b.ll..ked for not spotting the sticky, but my baby is GM, was going to look at claying her but thanks for the advice.
Now, I understand the 2 bucket method, actually already use it, but not wishing to appear stupid, what is and where do I get a grit guard, not mentioned in the sticky.
You will be fine claying a car. The only thing you need to make sure is you use plenty of lubrication on the paint. If you don't you can cause marring with is damage caused by pulling clay across the paint. A Meguairs Quik Clay kit contains more than enough to do the car.
A grit guard can be got from here - http://www.cleanandshiny.co.uk/index.ph ... ductId=170