because WD40 is supposed to be a lubricant
.
There are good lubricants and there are bad lubricants...
WD 40 IS NOT a lubricant...
There are a lot of people that use it as such...
If you want a lube use silicon, graphite or oil/grease... If you want a penetrating oil use PB Blaster, or the like, but don't use WD40 ... If you have and you think it did the job of a penetrating oil, most likely any liquid would have done the job...
As a to flush water from something like a distributor cap WD40 works good... If your using it to flush something out... DON'T forget to lube it with lubricant after using WD40... :smile:KennyV