14Sport

I used a clay bar to get rusty grinding dust that was embedded into the clear coat of a white Jeep off. It worked amazingly and will make the rest of your paint so smooth you won't be able to set anything down on the Jeep because it will just slide right off. Haven't tried it on paint flecks though.

twise

35 years owning my own collision shop. Small area wipe with thinner and wax afterwards. Large area you will need to hit with clay bar and thinner the stubborn spots. WD40 will leave a nasty oil residue. Clear coat is strong it can take a little thinner. It will remove all previous wax. So be sure to reapply.

ShutterBug

Why not rubbing compound? Not suggesting it, just curious why it would not be a solution?

14Sport

Too aggressive.

BrowniesJK

Clay bar is the way to go

BCP

For the most part it would be overkill, unless it's a large area. Claybar or small amount of thinner would be ideal. Personally I always attempt claybar before a chemical. I agree that most clearcoat is thick and durable but if it's oem you need to treat it as thin and weak.