Which way does a filter flow

[woodlandfarms]

OK, kinda stupid, but here is my question, and now I may have my answer in my head but I am moving forward.

When I change hydraulic oil filters, there is at least 2 quarts of oil in them, that I just throw away. I was wondering if I should make some effort to pour it back, and was wondering if I should plug the outside holes or the inside hole to prevent debris from flowing back...

Any thoughts?

Carl

 

[john_bud]

When I change hydraulic oil filters, there is at least 2 quarts of oil in them, that I just throw away. I was wondering if I should make some effort to pour it back, and was wondering if I should plug the outside holes or the inside hole to prevent debris from flowing back...

Any thoughts?

Carl

Just keep doing what you are doing, that's my thought.

jb

 

[woodlandfarms]

Let me try this again, maybe in english this time.

I would love to save the oil out of my filter. It must be 2 quarts at least. But, does oil flow from the outside of the filter to the inside, or the other way around? I have assumed it was from the outside ring to the inside.

And is there a way to collect this oil without re-introducing debris into the system?

Or, am I as usual, overthinking it and I should just put the 2 quarts on my burn pile and call it good?

 

[RickB]

Let me try this again, maybe in english this time.



And is there a way to collect this oil without re-introducing debris into the system?

Or, am I as usual, overthinking it and I should just put the 2 quarts on my burn pile and call it good?

Typically, oil flow is from the outside to the inside of the media.
There is no practical way of "saving" the contained oil without "saving" the trapped contaminants.

Call it good.

 

[Wayne County Hose]

Carl, you're over thinking it. You're not back to work yet?

 

[Reg]

Just casually looking at a filter cylinder you would think that outside to inside would expose the greatest surface area to flowing oil and therefore be "better".
Well, kinda/sorta - filters are pleated.
So if you think it through again, the Vee's of the pleats are more opened on the outside, so still "better" flow, more area, slower blocking from out to in.

{Yeah, overthunkin'}

Now, if you REALLY want to recover the oil that is in the filter and want it to go through the filter first...
Don't worry about any of this, just block the "In" and pour it out of the "Out",
but with a spin-on filter that would be tricky because the "In" is a ring of holes.
Probably not worth the expense and time to fab up a filter head, etc.

 

[SnowRidge]

For the PT's main hydraulic filter only, any crud should be trapped in the filter medium. You could pour the filter full of oil back into the hydraulic tank. If you did not introduce any extraneous contaminants (big if) by the act of removing the tank cap and setting up a funnel, you should be no worse off than if you pitched the oil. After all, it just came out of the very same tank.

I still wouln't do it.

 

[SPYDERLK]

OK, kinda stupid, but here is my question, and now I may have my answer in my head but I am moving forward.

When I change hydraulic oil filters, there is at least 2 quarts of oil in them, that I just throw away. I was wondering if I should make some effort to pour it back, and was wondering if I should plug the outside holes or the inside hole to prevent debris from flowing back...

Any thoughts?

Carl

The oil in there is as clean as that being pumped to the filter. The accumulated debris is in the filter media. Clean off the outside of the filter case and then punch a hole in the edge of the end of the can and let drain into a clean container.
larry

 

[BotaBigot]

While I personally wouldn't do it, I can understand your wanting to save the 2 quarts. The safest way would be to siphon it thru the center hole...

 

[woodlandfarms]

Carl, you're over thinking it. You're not back to work yet?

Oh you betcha. Friggin actors. I am pro-union, but the writing is on the wall. Either cut back on your paycheck or watch the jobs disappear. Actors are just shooting themselves (and the rest of hollywood) in the foot. I respect their demands, but now is really not the time.

Expect more reality TV guys.