Motorcraft Oil Filters

[BrendanC]

carquest premium, microgard select, SOME STP XL’s (depends on if champion labs or PG)

these are all based on Premium guard XL filters and are the current safe spot in filtration. wouldn’t spin anything on made by M+H currently and the Fram/champ lineup has issues with leaf spring stamping causing them to leak past the filter element where the leaf spring is attached.

 

[AJB0009]

It seems like filters right now are an ever-changing landscape. Purolator One and CQ Blue seem to be good as of this moment.
I agree too that the FL-400 seems to remain a solid choice for cost and performance.
I thought a while ago MC was coming out with a higher-end line of filters. Is that true or am I making that up? It seems I read about it way back when but have not heard anything since.

 

[MaximumMini]

You should work on that.

I believe you.

oops

 

[Freischneider]

Right now everyone is jumping on the Vietnamese or Chinese built filters as they seem to be of better quality than filters made anywhere else.

Don't forget the Korean made Pentius.

 

[thastinger]

It seems like filters right now are an ever-changing landscape. Purolator One and CQ Blue seem to be good as of this moment.
I agree too that the FL-400 seems to remain a solid choice for cost and performance.
I thought a while ago MC was coming out with a higher-end line of filters. Is that true or am I making that up? It seems I read about it way back when but have not heard anything since.

At least speaking to the 820 size...MC has always has the Ford Racing version of that filter.

 

[MaximumMini]

I was thinking about these oil filters and the effect they have on oil flow cause I just added an actual VDO oil pressure gauge to my minivans.

Now please educate me because I don't know but, is the oil pressure sending unit on vehicles normally located before or after the filter?
Or is there such a thing as "normal" here?

Reason I ask, if the oil pressure sender is AFTER the filter and the filter is restrictive, the gauge might show a lower oil pressure than the engine is actually trying to produce?

Conversely, if the oil pressure sender is BEFORE the filter, and the filter is restrictive, wouldn't that show a false "better pressure than actually exists" situation?

 

[ZeeOSix]

Reason I ask, if the oil pressure sender is AFTER the filter and the filter is restrictive, the gauge might show a lower oil pressure than the engine is actually trying to produce?

Conversely, if the oil pressure sender is BEFORE the filter, and the filter is restrictive, wouldn't that show a false "better pressure than actually exists" situation?

The oil pressure sensor is almost always located after the oil filter, and is located in a large main gallery that feeds the whole oiling system.

A really loaded and highly restrictive oil filter would lower the oil pressure if the restriction puts the PD oil pump deep into pressure relief. The higher the filter restriction combined with thick oil and higher engine RPM will put the oil pump father into pressure relief. And if the filter gets too restrictive then the filter's bypass would start to open and try to keep the dP restriction across the filter to around the bypass valve setting, and not starve the engine of oil.

A typical new filter is only about 1/15th the restriction of the engine oiling system.

 

[Urshurak776]

The oil pressure sensor is almost always located after the oil filter, and is located in a large main gallery that feeds the whole oiling system.

A really loaded and highly restrictive oil filter would lower the oil pressure if the restriction puts the PD oil pump deep into pressure relief. The higher the filter restriction combined with thick oil and higher engine RPM will put the oil pump father into pressure relief. And if the filter gets too restrictive then the filter's bypass would start to open and try to keep the dP restriction across the filter to around the bypass valve setting, and not starve the engine of oil.

A typical new filter is only about 1/15th the restriction of the engine oiling system.

Still amazed at how many people in this forum have no clue on a PD pump, or how it plays into a cars lubrication system. Nor do they know how little an oil filter plays into the pressure of the lube oil system (except as noted by you in your post.)

to the OP. Go back to that forum, tell the guy / gal that said that Oil Filter X is "less restrictive" that he/she is a moron and they should delete their account and sell their car.

Bonkers....

We still need a sticky on BOTOG that explains how a lubrication system works in a car, with details on a PD pump.....

 

[Urshurak776]

The advice was that they were least restrictive while still providing superior filtration.

Whomever said that is a moron.

 

[Fair enough]

The oil pressure sensor is almost always located after the oil filter, and is located in a large main gallery that feeds the whole oiling system.

A really loaded and highly restrictive oil filter would lower the oil pressure if the restriction puts the PD oil pump deep into pressure relief. The higher the filter restriction combined with thick oil and higher engine RPM will put the oil pump father into pressure relief. And if the filter gets too restrictive then the filter's bypass would start to open and try to keep the dP restriction across the filter to around the bypass valve setting, and not starve the engine of oil.

A typical new filter is only about 1/15th the restriction of the engine oiling system.

It would be good to explain it all out for the whole system for us regular folks. I see there is build up of oil pressure across the filter media due to restriction of the fibers. Then it passes into the open center tube, restriction event over. Then further down there are more restrictions like bearings, that raise the pressure back where the oil sender is.
If that outline is wrong please correct it. There needs to be clearer understanding imo.

 

[MaximumMini]

to the OP. Go back to that forum, tell the guy / gal that said that Oil Filter X is "less restrictive" that he/she is a moron and they should delete their account and sell their car.

In all honesty, I probably will not do that.
What I will do.....is take your advice and read up on PD pumps.

****. Just when I thought I knew it all.

 

[ZeeOSix]

It would be good to explain it all out for the whole system for us regular folks. I see there is build up of oil pressure across the filter media due to restriction of the fibers. Then it passes into the open center tube, restriction event over. Then further down there are more restrictions like bearings, that raise the pressure back where the oil sender is.
If that outline is wrong please correct it. There needs to be clearer understanding imo.

You're basically right. But all points between the pump output and the location of the oil pressure sensor will always be higher than the pressure seen at the pressure sensor. Both sides of the filter will be higher pressure than the sensor location.

The dP across the filter media (what the filter bypass operates from) is its own little dP vs flow ecosystem. If the PD pump isn't in pressure relief then the filter is basically invisible to the oiling system. And a healthy PD pump isn't going wild with "pump slip" from the small dP developed by a normal flowing filter, like a few people sometimes think. Old style spring loaded relief valve pumps will keep building flow and pressure to some degree even when they are in pressure relief. Once the pump is in relief, and still building flow and pressure as RPM increases, it doesn't really matter what the pump slip is because the pump is putting out way more flow than the oiling really needs. That's why it's in relief in the first place.

Of course, an ECU controlled PD oil pump is a different animal. Depending on how sophisticated the design and control system is will determine how well it controls max pump output volume and pressure.