definately do not blow it with air line [xx(]
you have to be careful with the oil too.
Racer is having techie issues otherwise he would explain,he will be along shortly :I
Couple of years... I know someone said every 50k miles, but it does look a big clogged, and when you're getting your van ready for the summer you just try to 'do' everything.
You don,t use an airline, it wrecks them chances are it doesn,t need cleaning, even if its clogged with crud it will outflow a paper filter. If you really do want to do it, just wash it from the inside with warm water. You can buy K&N filter oil,but use it very sparingly,if overoiled the flow drops. lay a very thin bead on the peak of each pleat and if correct it should wick it up in about 15 mins, My advice is leave it alone
"You,re only supposed to blow the bloody SLIDING doors off"