I have always used nickel based never sieze on all my axels as it last a lot longer than grease and they slide out so easy every time, I have always found wd40 to be a shit product and is well known for its shitness in the mechanical fitter trade, I have always used INOX which is far superior as it does not wash off like wd does and unlike wd40 INOX is non conductive and I always spray inside my ignition and switch blocks and all other electrical system connections without the worry of it arcing out.