Last fall I completely rejuvenated the paint on my 89' Ford Van (Single Stage paint). M105, Ultimate Compound, and M205 were all used to remove heavy oxidation and prep the paint for finishing products. I then applied three coats of M7, two coats of M21, followed by two coats of M26. Definite overkill but I enjoyed it. The vehicle sits in the garage and all I have done since is a couple spray downs with D156. I would like to hit her with several coats of M7 again. I am wondering if I first hit her with a thorough cleaning/sealant of M20 if the M7 could still get to the paint to nourish it. I really like M20 and would prefer not having to go back to the M205. I guess my question is if the M7 can nourish the paint with the M20 already applied?