So am I #3 or #4? My AIS filter (stock intake and engine) got a little wet around the lower half and up one side while driving on the highway during a downpour last summer. I didn't notice any change in engine sound or performance at the time. But while looking under the hood a week later, I noticed the air filter restriction gauge had climbed from its usual quarter-way to half-way. (I remember I had to pass a few cars after the rain had stopped and had my right foot planted a couple times). I pulled the filter and saw the water stain, but of course it was dry by then. I send an oil sample to Blackstone at every change. Silicon levels have not increased, so I don't believe there is any significant affect on the filtering performance. I will continue to run this same filter unless I see silicon levels increase.
I wish that Donaldson guy would come back and post about the lasting effects of water on the PowerCore filter media.
I wish that Donaldson guy would come back and post about the lasting effects of water on the PowerCore filter media.
