Service Pro Extended Protection Oil Filter

[garageman402]

The Service Pro Extended Protection filter specs shown here are incredible, maybe even better than the OG Fram Ultra. My question is where did this testing come from? Is it tested using ASTM standards?

This chart shows 83% @5u, compared to Donaldson's 50% @6u, & it's rated for 10K which would be expected for such fine filtering media. ASTM testing would include sloughing off of particles during the 10K mile lifespan, so holding capacity should be good. I have also seen mentioned here that a number of companies' filters are made by this mfg. but it's not clear to me that they incorporate the same media. Are these realistic test results?

I've also noticed the part numbers for their different sizes coincides with Purolator's part numbers, e.g. a PL22500 crosses to an E2500, a PL24011 crosses to an E4011, etc. Coincidence?

 

[Glenda W.]

These are under the PGI umbrella.

 

[garageman402]

Ya I've seen this posted many times, but are we sure every brand uses the same media? Do you have any spec sheets for specific brands like, say, Valvoline, or Federated, just for example? I've already seen how media & micron ratings vary within one brand, even within one size of the same brand (Donaldson). Some are mfg to OEM (rock catcher) specs, some to more efficient specs. The Service Pro M series are more OEM specs, where the E series are the ones in the chart in my post.

 

[Glenda W.]

Ya I've seen this posted many times, but are we sure every brand uses the same media? Do you have any spec sheets for specific brands like, say, Valvoline, or Federated, just for example? I've already seen how media & micron ratings vary within one brand, even within one size of the same brand (Donaldson). Some are mfg to OEM (rock catcher) specs, some to more efficient specs. The Service Pro M series are more OEM specs, where the E series are the ones in the chart in my post.

I don’t have spec sheets. I did call PG for an efficiency range of all their 10k filters. This is what I was told which matches your graph.

98.6%@15(absolute)
99.5%@20
99.9%@25

 

[garageman402]

I don’t have spec sheets. I did call PG for an efficiency range of all their 10k filters. This is what I was told which matches your graph.

98.6%@15
99.5%@20
99.9%@25

Actually, from the graph, it looks more like:

99.6%@15u
99.75%@20u
99.875%@25u
99.958%@30u (Mobil 1 looks like 100%)

(Edited 99.9375%@30u to 99.958%@30u)

 

[Glenda W.]

Actually, from the graph, it looks more like:

99.6%@15u
99.75%@20u
99.875%@25u
99.9375%@30u (Mobil 1 looks like 100%)

This could be the best media mass produced.

 

[garageman402]

This could be the best media mass produced.

I zoomed in more & updated one, lol

 

[ZeeOSix]

Is it tested using ASTM standards?

Most likely ISO 4548-12. ASTM doesn't have any lube filter efficiency testing specs/procedures like ISO or SAE does.

There's a phone number you could call to verify.

 

[ZeeOSix]

Actually, from the graph, it looks more like:

99.6%@15u
99.75%@20u
99.875%@25u
99.958%@30u (Mobil 1 looks like 100%)

(Edited 99.9375%@30u to 99.958%@30u)

I always go to 4 decimal places when eyeballing bar graphs.

 

[garageman402]

I always go to 4 decimal places when eyeballing bar graphs.

Ya, I was using 1/32" with 1" each percentage....... lol

 

[Fair enough]

They play loose with words, synthetic media one place, synthetic blend in another. Probably most buyers are thinking it’s synthetic media when they do that. The idea to me is they like to do a sales pitch with the media so what else is a sales pitch. Maybe the other two filter makers know more about what a filter does and what it shouldn’t do. It’s not like they are just throwing some media in a can they don’t know the specs on.

 

[garageman402]

STP seems to be Champion made now

 

[ZeeOSix]

STP seems to be Champion made now

View attachment 301171

That "Product Change Notice" is dated 5/23/2024. Funny how they tout the design changes to make it flow better, when in reality it probably lowered the dP a PSI or two at 10 GPM of flow.

Aren't the STP XL filters currently at AutoZone made in Asia and look similar to PGI construction? Maybe only some STP models are Champion Labs these days. Welcome to the game of oil filter Whack-A-Mole, lol.

Section 1.2 shows two specific part numbers. Were there more filter part numbers listed in Section 1.2 (it's cut-off)?

The one in the link below isn't Champion Labs. Plus I believe the STP filters (at least the Extended version) are under the PGI umbrella (see post 2).

https://www.autozone.com/filters-an...ded-life-engine-oil-filter-s7317xl/411647_0_0

 

[garageman402]

Section 1.2 shows two specific part numbers. Were there more filter part numbers listed in Section 1.2 (it's cut-off)?

Yes, BITOG won't let me post a pdf, so when I converted to jpeg it only copied one page at a time. I started a new thread with 4 of the 5 pages, they didn't post in order . I see you've posted there too...

Thread 'Autozone/STP Filter Changes'

Sep 19, 2025

STP now confirmed as Champion made

• garageman402
• Replies: 8
• Forum: Engine Oil Filters

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[Glenda W.]

The STP filters change by region. Some areas are Champ. Other areas are PGI. I always say check before you buy.