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Timmayy!

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Mike GMC Enthusiast

Mike GMC

Posted
Posted
33 minutes ago, Timmayy! said:

Pressure drop is related to flow rate which is directly related to overall pressure. The flow rate is driven directly by the head pressure created by the oil pump. Higher supply pressure higher flow rate greater DP across the filter.

 

This argument can go both ways. If your bypass pressure setting is too low you will restrict flow by not bypassing the oil filter at an early enough DP. So while the "nanofilter" may have a smaller resistance factor (unproven one way or the other) resulting in a lower DP and higher flow, the fact that its bypass pressure is higher essentially can starve the engine when it is unintended to.

 

I do not have the answer either way whether or not the nanofilter decreases the resistance factor.

 

But i think this argument is somewhat similar to people switching to 5w-2 or 5w-30 after warranty is up. I'm in the boat that i am going to follow what the engineers decided at GM to run 0w-20. The same way that i am going to follow their by-pass pressure setting recommended. Some agree some do not.

Do you have that backwards?  It would seem to me that a lower bypass pressure would ensure flow not restrict it.

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Timmayy! Enthusiast

Timmayy!

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1 minute ago, Mike GMC said:

Do you have that backwards?  It would seem to me that a lower bypass pressure would ensure flow not restrict it.

I am sorry you are correct i was thinking backward for a second let me correct.

Black02Silverado Senior Enthusiast

Black02Silverado

Posted
Posted
21 minutes ago, Timmayy! said:

If you do call let me know what they say. I'm curios about the discrepancy now.

I called and waiting to hear back.

Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted
16 hours ago, Mike GMC said:

This is the easiest way I know to explain this and it still may not come across in writing.  

Came across just fine. Filtration is a balancing act. Tighter the mesh the lower the flow. (For a FIXED filter area) 

 

Here's where we get in trouble IMHO. In thinking that we just have to use a system the factory supplies. One filter screwed to the block. Or restricting ourselves to a particular media. The compromise disappears when we allow something other. Remote filtration. Bypass systems. Centrifugal filtration. Multiple filters or filters of double length. Stainless media. It can get really silly. 

 

Your freedom expands to the depth of your knowledge. That marketing crap on a filter box is worthless. So to is the idea that you have to go down the rabbit hole. One such stainless media outfit would have you buy a 'special' bucket with 'special' solvents' or their warranty is void. :rolleyes: Greed's belly is never full. 

 

Knowing your oil system would be a good place to start. So question for the guys? 

 

Which side of the filter does the ECM use to modulate the two stage pump solenoid? 

Mike GMC Enthusiast

Mike GMC

Posted
Posted

It seems it should be down stream because the intent is to control the oil flow to the bearings.

Timmayy! Enthusiast

Timmayy!

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Posted

Well personally I would engineer it to control off the discharge of the oil filter. This would account for any increased flow resistance or “DP” associated with a dirty filter. Doing so would allow the oil pump to overcome the flow resistance and provide the engine with the same oil flow as a clean filter. 

 

Whats the real answer though

dieselfan1 Senior Enthusiast

dieselfan1

Posted
Posted
10 hours ago, djw88 said:

how is it a pain to get rid of your used oil?

guess it may depend on state IDK.

here any automotive place has to take used oil free of charge.

O'Reilly also takes oil for free and used filters for free.

 

8 hours ago, MaverickZ71 said:

I don't understand why it's "such a pain in the ass to dispose of your old oil" (and oil filters)?  Pour it into plastic containers such as the gallon containers that new oil comes in, or rinsed out gallon milk jugs, 2L pop bottles, etc.  Put them in a cardboard box and haul them off. 

 

All of the auto service dealers, tire dealers that do oil changes, WalMart, Sams Club, auto parts stores (AutoZone, Advance, OReillys, etc.), and bulk oil dealers around here will gladly take if off your hands for free, as they sell the oil to oil reclaimers, who in turn sell it to refineries.  

 

Of course, if you live in some Draconian state or territory that does not allow this (never heard of such a place, personally, as the tree huggers love their recycling), then you've got bigger problems.  

I know where to take it. I hate spilling oil all over trying to put 8 qts of oil in two separate  4 qt jugs. Then putting them in the back of my clean truck and hauling them to O'Reilly's or Valvoline instant . It's messy. I've done it many times and been there  done that. I'm sure I'm not the Lone Ranger. My garage is clean enough to eat off the floor ....

Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted
1 hour ago, Timmayy! said:

Well personally I would engineer it to control off the discharge of the oil filter. This would account for any increased flow resistance or “DP” associated with a dirty filter. Doing so would allow the oil pump to overcome the flow resistance and provide the engine with the same oil flow as a clean filter. 

 

What's the real answer though?

 

2 hours ago, Mike GMC said:

It seems it should be down stream because the intent is to control the oil flow to the bearings.

Yes past the filter in this design. Pump, filter, various engine parts, pressure tap. And as Tim notes, no matter what is happening at the filter the galley stays full and up to pressure. The only real questions are then?????? Filtered or unfiltered? How much work is that taking at the pump.

 

Gen I small blocks in example other the relief valve was a spring IN the pump discharge that routed over pressure on the outlet back to the inlet. A plugged filter thus equated to no oil anywhere but the pump.

 

In it's purest form oil pressure is set by internal clearances; mainly rod side clearance.

 

Now that you know this you know a 22 pound relief vs a 12-15 pound will never reduce oil volume to the critical parts but a 12-15 psi relief will bypass the filter earlier and deliver dirty oil. You will never see it on your gauge. It isn't lack of oil that kills the AMF, it is dirt and the reason for the increase in specification by GM.  

djw88 Enthusiast

djw88

Posted
Posted
29 minutes ago, dieselfan1 said:

 

I know where to take it. I hate spilling oil all over trying to put 8 qts of oil in two separate  4 qt jugs. Then putting them in the back of my clean truck and hauling them to O'Reilly's or Valvoline instant . It's messy. I've done it many times and been there  done that. I'm sure I'm not the Lone Ranger. My garage is clean enough to eat off the floor ....

I guess you shouldn't change oil if you are that bad at it lol. All joking aside I can see how the way you do it is a mess. 

 

I have a five gallon pale with a lid on it that has a spout. All the used oil gets dumped into it and when it's full I take it and my filters to O'Reillys dump the oil rinse and repeat. No mess at all. 

Black02Silverado Senior Enthusiast

Black02Silverado

Posted
Posted
On 1/22/2019 at 11:42 AM, Timmayy! said:

If you do call let me know what they say. I'm curios about the discrepancy now.

Got a call back from AMSOIL tech department.  They said that the Ea017 filter has a by-pass setting of 18-24 psi. If anyone has any other questions they asked me to have you call their tech line. 

 

1-715-399-TECH (8324) between 8 a.m. and 5 p.m. Central Time.

Timmayy! Enthusiast

Timmayy!

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22 minutes ago, Black02Silverado said:

Got a call back from AMSOIL tech department.  They said that the Ea017 filter has a by-pass setting of 18-24 psi. If anyone has any other questions they asked me to have you call their tech line. 

 

1-715-399-TECH (8324) between 8 a.m. and 5 p.m. Central Time.

So I wonder what’s up with the discrepancy in info 

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