My husband has his paint job on his truck with the lifetime ceramic coating on it already, will this affect that coating on the paint or shoudl it be avoided on the paint of his truck?

Absolutely not my nephew owns rust check and it will only protect the truck even more. It will protect the ceramic coating but what rust check the that the ceramic coating doest is rust check is applied to every panel on the vehicle on the INSIDE of every panel as well, amazing product! My brother has a 2003 GMC Sierra extended cab pickup and has used rust check since new and it still looks like a new truck. It's an amazing product, HIGHLY trained staff and your your truck will look new 12 years from now. It has to be applied once every year but it's definitely worth doing.

Hello Robyn, Rust Check will leave a light overspray on the exterior but its harmless. After a few days it can be washed normally with soap and many say that it makes the paint more glossy but I honestly I've never noticed that. Its a mineral based fluid so its environmentally friendly and non toxic always.