8th Generation Honda Civic Forum - View Single Post - K&N drop in filter is worth it for the HYBRID.

darkdan · 07-09-2008, 04:33 PM

5 to 25 micron is VERY fine (smallest thing a human eye can see is 40 microns).

But it's safe to say if a filter lets through more course it's going to let through a lot more fine.

I'd say noticeably reducing engine QUALITY life is very high (would you rather your engine at 100k act like it has 100k or act like it has 140k miles? What about at 140k)

I've seen plenty of used oil analysis results on vehicles with K&N and the trend is always a higher amount of dirt in the engine oil.

07-09-2008, 04:33 PM	#18 (permalink)
darkdan Senior Member Join Date: Aug 2007 Location: Owatonna, MN Posts: 1,364 Dan	5 to 25 micron is VERY fine (smallest thing a human eye can see is 40 microns). But it's safe to say if a filter lets through more course it's going to let through a lot more fine. I'd say noticeably reducing engine QUALITY life is very high (would you rather your engine at 100k act like it has 100k or act like it has 140k miles? What about at 140k) I've seen plenty of used oil analysis results on vehicles with K&N and the trend is always a higher amount of dirt in the engine oil.