So I just detailed one of the car in my family over the weekend, and applied a layer of Klass SG. I am planning to put on another layer of KSG plus a layer of M16 wax. However, the next day afternoon I had to move the car out of the garage for an appliance delivery and now the car is slightly covered in dust. Should I just 1) wash it with ONR or 2) use QD to give it a wipe down or 3) use Isopropyl to wipe it down prior to apply the sealant and wax?
Well, anytime you use anything as strong as an IPA, you are doing this to remove existing sealants, waxes, etc... Since you said you already applied a sealant, the paint has been cleaned, and sealed, so removing it with IPA would be making all the work you just did the other day,in vain, and you would be starting over. If it were me, I would probably rinse the car in the shade really well, look at the beading you now have, dry it, and apply your 2nd coat of sealant.. Dan F
I would say avoid ONR as a pre-cleans in this case. It contains polymers which will make it tougher for the next LSPs to stick. I know from experience As mentioned by others. A simple water rinse will be perfect.
A polymer will add a layer of protection on top of the sealant right? Wouldn't rinsing and drying it induce scratches... if so, maybe just washing it with Meguiar's Gold Class.
Just a quick rinse if it's been in the garage, if it's a light coating of dust a simple spray with the hose should take everything off and keep your LSP intact.
The polymers will add protection yes; but it also means things are less likely to stick to it...including the next layer of LSP. I used ONR as a claylube once but forgot to rinse it off well; the layer of AG HD Wax did a horrible job of adhering.
