yes every engine still needs rust protection but ok fellas lets all stop using WD-40!!! IT IS NOT A RUST PREVENTER!!! You are not doing yourself or your engine any favours using WD-40. Its totally useless ok!

What you want to use is a fa superior product called INOX. Use this. This is the bee knees of lube/rust preventers. I cant recommend this highly enough. I race yachts and this is the ONLY spray we use. Ask a good mechanical engineer and they will say the same. WD-40 is total garbage.