After playing, my guitar player always sprays WD-40 oil over his strings and them wipes it out with a dry cloth. He says it has almost double the life of the strings!!! The label of the oil says it doesn't harm wood, and my friend has not seen any noticeable change in his freatboard. In fact it maybe good, oiling your board (with almond oil) prevents it from drying out and cracking, maybe WD-40 does to. Has someone tried this? Would you recommend it?