I have 4 vans equipped with Amsoil air filters. So far the results are good with the silicon in my UOA's hovering around 1ppm/1000 miles. I especially like the thick foam seal. I coat it in filter oil and the air box lid really has to squeeze it down. So there's no way air is going to bypass the filter.
I clean them every 25,000 miles and they are usually very filthy by then. At the same time I clean the MAF sensor as a precaution, but I've never noticed any oil that has migrated up that far.
Paper filters arn't as cheap as they used to be and I keep my vehichles for a long time. So a reuseable filter is cheaper in the long run.
I clean them every 25,000 miles and they are usually very filthy by then. At the same time I clean the MAF sensor as a precaution, but I've never noticed any oil that has migrated up that far.
Paper filters arn't as cheap as they used to be and I keep my vehichles for a long time. So a reuseable filter is cheaper in the long run.