Re: What to put under the Meguiar's # 21?
As Michael replied, you dont need to put anything under (or over) #21, it will bond to a clean surface just fine. But note that you might need to REMOVE any contamination or dealer applied wax to get that clean well-prepared surface. My recent brand new car looked fine, but running your hand over the paint clearly felt the bumpy surface and a light claybar preparation returned it to smooth-as-glass (and removed any dealer wax as well). A paint-cleaner wont really remove those small bumps effectively, you need to clay (if you have them).
You can wash+clay and then also (optionallly) apply a glaze (DC2 or M07) to maximize the wet-look, especially on dark or red cars. The #21 will go fine on either the clean surface or the glaze (the glaze is not needed to make #21 stick better, but also wont interfer and some folks like me thing it gives a slightly better look).
As many folks say, a great finish comes from great preparation, the wax is just the final protection to keep it that way.
Originally posted by opas
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You can wash+clay and then also (optionallly) apply a glaze (DC2 or M07) to maximize the wet-look, especially on dark or red cars. The #21 will go fine on either the clean surface or the glaze (the glaze is not needed to make #21 stick better, but also wont interfer and some folks like me thing it gives a slightly better look).
As many folks say, a great finish comes from great preparation, the wax is just the final protection to keep it that way.
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