Mahle oc217 oil filter specs

[Jonas]

I received a response to my inquiry about the oil filter I had been using and I'm not entirely sure I understand it all. Here it is:
Answer: Our filter matches the OE specifications for form fit & function. Our filter matches Toyota part # 90915YZZF1 & # 9091510004 The by-pass setting is 8-11 PSI -- The media is Synthetic & the flow rate is 7.9 GPM -- & is rated at 6 microns/per. It is an excellent choice for your vehicle & is the correct filter as cataloged.

Can anyone elucidate this? Opinions are always welcome and inevitable as well ;-)

 

[Jimmy_Russells]

Seems mostly straightforward... What are you trying to find out? Do you have a specific question about it?

 

[edyvw]

I received a response to my inquiry about the oil filter I had been using and I'm not entirely sure I understand it all. Here it is:
Answer: Our filter matches the OE specifications for form fit & function. Our filter matches Toyota part # 90915YZZF1 & # 9091510004 The by-pass setting is 8-11 PSI -- The media is Synthetic & the flow rate is 7.9 GPM -- & is rated at 6 microns/per. It is an excellent choice for your vehicle & is the correct filter as cataloged.

Can anyone elucidate this? Opinions are always welcome and inevitable as well ;-)

If you see MAHLE filter, just buy it.

 

[Jonas]

Seems mostly straightforward... What are you trying to find out? Do you have a specific question about it?

I just don't know what "6 microns/per" means.

 

[Jimmy_Russells]

I just don't know what "6 microns/per" means.

It looks like some kind of a typo or something. 6 microns would be the filtration rating. Honestly whoever answered that email it just looks like they copied the info from some type of document.

Like edy said though Mahle is typically very good stuff.

 

[Zee09]

I wouldn't lose sleep over those specs.

 

[wpod]

The airfilter is the most important filter.

 

[Zee09]

The airfilter is the most important filter.

We hear that every day on here
You can drive without an air filter but not without an oil filter

 

[Passport1]

That's right. My oil filter catches the rocks that pass through my K&N air filter.

 

[ZeeOSix]

It looks like some kind of a typo or something. 6 microns would be the filtration rating.

At what efficiency? Could be assumed to be "nominal" which typically means at 50%. It's probably more efficient that the Toyoda OEM.

And the flow rate spec of 7.9 GPM is nebulous also because it doesn't say under what flow conditions.

Yes, it's a boiler plate response.

 

[ZeeOSix]

We hear that every day on here
You can drive without an air filter but not without an oil filter

You could if you installed a filter mount block-off.

 

[Zee09]

You could if you installed a filter mount block-off.

Yeah but the clogged fuel filter won't let you out of the lane

 

[Jonas]

They just sent me some more info. Again, I'm not entirely sure what this means, but it doesn't seem all that great.
From Mahle: "Per ISO standards the nominal flow rate is rated at 30 liters per minute. Per ISO Bulletin 4548-12 the Filtration efficiency is rated at 10 microns per layer/per pass at 6% plus or minus 1% - 20 microns per layer/per pass at 20% plus or minus 2% - 30 microns per layer/per pass at 58% plus or minus 2%. Our filters Meet all OE specification for form fit & function." Are they saying 58% at 30 microns?

 

[ZeeOSix]

They just sent me some more info. Again, I'm not entirely sure what this means, but it doesn't seem all that great.
From Mahle: "Per ISO standards the nominal flow rate is rated at 30 liters per minute. Per ISO Bulletin 4548-12 the Filtration efficiency is rated at 10 microns per layer/per pass at 6% plus or minus 1% - 20 microns per layer/per pass at 20% plus or minus 2% - 30 microns per layer/per pass at 58% plus or minus 2%. Our filters Meet all OE specification for form fit & function." Are they saying 58% at 30 microns?

30 l/min is ~8 gpm. But what is the oil viscosity and delta-p across the filter at that flow rate? Really need that info to get the whole picture. I'd have to assume that is with hot oil and the delta-p is close to the bypass valve setting.

The efficiency info they gave you is undecipherable. Just ask them what the overall ISO 4548-12 efficiency rating is of the oil filter as an assembly, not by "layer" of media. It will be in the form of xx% at or greater than yy microns. Example: 95% @ 20 microns.

 

[Jonas]

30 l/min is ~8 gpm. But what is the oil viscosity and delta-p across the filter at that flow rate? Really need that info to get the whole picture. I'd have to assume that is with hot oil and the delta-p is close to the bypass valve setting.

The efficiency info they gave you is undecipherable. Just ask them what the overall ISO 4548-12 efficiency rating is of the oil filter as an assembly, not by "layer" of media. It will be in the form of xx% at or greater than yy microns. Example: 95% @ 20 microns.

Thanks, I contacted them again. I figured I either didn't understand what they told me or that is the least efficient oil filter on the market.

 

[ZeeOSix]

Thanks, I contacted them again. I figured I either didn't understand what they told me or that is the least efficient oil filter on the market.

I don't think anyone could decipeher their efficiency reply. They should know what the filter assembly efficiency as a whole tested at in the ISO 4548-12 test ... if they did that test.

 

[Jonas]

They sent me a technical data sheet. If you look at figure 4.5, it says the same thing they sent me in writing before-this is one of the least efficient oil filters available :-(

 

[Job]

Maybe the rating given is by flow rate or something different than the norm. They start mentioning flow rate.

 

[Jonas]

It does say filtration efficiency ISO 4548-12 58% @ 30 microns. However, I still feel like I'm missing something since I've never heard of an oil filter with such lousy efficiency.

 

[ZeeOSix]

It does say filtration efficiency ISO 4548-12 58% @ 30 microns. However, I still feel like I'm missing something since I've never heard of an oil filter with such lousy efficiency.

It's pretty clear in the snip-it below ... you're not missing anything. They give efficiency at 3 different particle sizes:

6% @ 10u
20% @ 20u
58% @ 30u