Does (or did) people rotate round air filters

[Kestas]

Way back when, the old round air cleaners would get dirty right where PCV gases are plumbed into the air cleaner. I used to rotate the filter to give the filter an even chance to get dirty. Now that I think about it, I should have left it alone.

 

[D189379]

Originally Posted By: Boomer
And the neat thing with round filters is you can invert the metal cover and bolt it back down, leaving an air space all the way around so you can see the paper filter. Boy, does this sound great when you hit the accelerator. Or at least it did when I was 16 (driving a 62 Chevy 6 cylinder!)


Lol I did that on my 79 GMC back in the day. I'm sure I shortened the life of that truck by some of the dumb stuff I did to it.

 

[MetalSlug]

haha never though about it. good idea

 

[TiredTrucker]

I do it with the under hood filter on my semi truck. It gets changed at about 60,000 miles, I do OCI's at 20,000, so in between air filter changes, I rotate it 1/3 turn. In the semi's with under hood filters, there is little tolerance between the air filter housing and the filter. Just makes sense to rotate it occasionally.