Louvers, holes and "slits"?

There's still a point where they can be too choked off - don't "trust" them because there are many.

Yup. I was thinking the other day about how many we see here on BITOG. Now just think how many there really are because we are seeing just a small percentage of all of the oil filter being used.
 
Another beauty ...

Bad Louvers.webp
 
Easy enough to look at when buying one or two, but if you have a shop and buying by the case, therein lies a potential problem. Most shops are busy enough not to want to waste time sending an order back.
 
Back
Top Bottom