Hi there!

Sure liked your "Whoa Nelly" phrase there.
You must be serious and your not horsing around with your sentiment about filters!

I got some of that too!

I'am sorry but I have written off all of these oil and car filters as pretty much a marketing scam.
The K&N filters say it "straightens the air flow" really tosses me into ha-ha land!
Especially when the price label just keep climbing up?
Surgical cotton needed.....hello, bet it's sterilized too!

If you look up those SAE testing specifications on the box and study the < > signs with the microns given, you will find out that they are really only screens or strainers!
Their microns listed but < > are fairly large and have to be in order to pass oil somewhat readily.

This amount is never given in specifics as far as I have seen. They are sold a a "full flow" oil filter. They have to, in case of a collapse or anti drain valve issue happening.

What it really comes down to, with the QPM (quarts per minute) amounts of oil, circulating round and round, the filters run in bypass mode somewhere just above idle. All the oil needed passed cannot pass though a small can and get truly cleaned.

Ever try maintaining 20 to 60 psi of oil flow on a 10 mm pipe line and see how much it can flow. I rest my case, even if, restricted down to 30% of that cross sectional size.


I have noticed that the large diesel truck engines, that use gallons of oil in their sumps, stack them up and they are really big around. Their RPMS are far lower than than gas engines. Their oil pumps must be a lot bigger as most everything else is on those highway locomotives!


Diesel fuel is a real dirty burning fuel though, so that must be it! Pull the oil pan plug and it is black but it's filtered, ah yeah, ok! I'll bite, that it's strained of some very clumpy accumulated particles of SOOT!

A gas engines gas is pretty clear to start out with! It must be those "crusty deposits" of detergent additives or that outside air (dirt) that we are straining. With two filters and the oil gets black?
Ah, that brown to blackish oil, so, it must be the additives, keeping it suspended!
That's IT! It doesn't leave the oil! It is the oil? My My!

So what does an oil filter do again? I need to be reminded.... $3.00 or $13.00 for a oil strainer.... A $35 air straightening filter..... Sorry but I fell off the turnip truck more than a few years back!

I have run toilet paper filters and the oil did stay brown longer but check out the amount of filter paper used in comparison. It filters vertically down through the roll.
Ah but, the Micron size is still unknown but it will take candle soot out of oil!

The oil will stay cleaner all the time and you never have to drain the oil again. That is if you follow their instructions!
As I remember it's every thousand or two thousand miles remove and replace the toilet paper roll and replenish or top off with fresh oil! This replaces the oil that was removed in that roll of absorbent paper and adds new additives!

Frantz oil filters might still be sold on-line, the last time I look.
I can guess why, they never really took off!

Want to pinch a penny and save a can? Toilet paper is about $.70 a roll.
How much more for quote "special" treated thin pleated paper with X Amount of an additives package.
How much is in there and is added to the higher costs really?
It's not like a laundry or dishwasher tablet you can see!

You buy oil for that kind of stuff and I trust the oil guys with their standards more! They cannot blame the filter guys as they "are" and "on" the bottom line, if oil fails!

I bet filter makers don't break a buck-fifty by much, to make the whole thing, under any personalized label, on the same side by side production lines! Same for air filters!

Ok, I'm leaving, my horse died. Sorry, I worked it to death on here again... (:)

Phil