I also got back a reply from Robinson which despite a specific question about WD 40 was only a very general answer. They advise using automotive wax.
I was chastised in a post above for recounting my experience way back in 1952 when I stated that I waxed the blades on a Sikorsky helicopter and the pockets debonded because of the petroleum distillates in the wax. Robinson approves the use of car wax on the blades. I would strongly suggest that you look at the list of contents in their approved wax or possibly they just said car wax and not a specific brand as they can vary around the world and they can contain many different elements. It most likely contains petroleum distillates or something similar that can react with the bonding agent.
It was stated that their operator used plain household detergent to clean the blades. Detergents in some countries can contain Sodium Meta silicate penta hydrate, which is highly alkaline or possibly monobutyl ether, which is a solvent. I would suggest that you return to the dark ages of 1952 and use Castile soap and deionized water to wash the blades and go back to Robinson and ask them which car wax and detergent they recommend. That way, you are protected if you experience debonding or any other problem and it is traced to the use of the recommended products. .
Run Henney Penney the sky is falling or, is it Wolf, Wolf!
