What products or methods does everyone use to keep the alloy parts on there LS in good nik. You know stopping the powdery white oxidisation on alloy parts on the motor, or doesn't anyone worry about it. Trying to stop the ageing process taking hold on my engine, I thought spraying inox would be a good idea but then thought no that shit gonna smoke up when the motor gets hot so wiped it off. Any ideas? I want to keep the engine bay looking as good as the outside paint if you know why I mean.