is it sticky determine how well the filter works? i think ordinary air filter oils even thin works well, make sure it penetrate and covering all foam.

Has anyone tried Motul A3 air filter oil?

I use bel-ray foam filter oil in the aerosol can. Put the filter in a zip lock bag then spray the oil in the bag and work it around. Gets a nice even coat and my fingers don't get sticky.

I use UNI Filter Oil ? Works great

+1 on uni....goes on thin, then tacks up nice

Ok, i've bought 1L of that Motul oil: smells, colours and feels same as AE special RC oil, but for 30$ per pack. Our local nitro guys says that it's ok to reuse air filter washing it before reoiling. Just wondering how i can wash out this oil, tried some dishwasher fluids, but filter is still sticky.

Turps will clean them then under water and let dry for a day or two then re oil and use over and over again

I keep about 3 on the go and rotate them from used to cleaning to fresh all good