Originally Posted by willhollin
I'd have used white lithium grease, WD40 is very thin and won't last long.
I'd agree - but access is not really very good - look at the first pic - that fan is really buried. I'm not sure its really the rusty bolt bit that is the issue - I think this works as the WD40 is able to penetrate a number of bits of the fan assembly.
PS when does your 1M arrive?