Fram, Purolator, Champion Labs and some others. It should be referenced on their website and/or on the filter box.
Wix = Nominal (50%) at 21 microns? (Corvette LT1 Filter Options)
- Thread starter Robvette
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So the Purolator boss is tested? But on here you guys say it tests about as well as the WIX XP how come that is?
Because that's what an official ISO 4548-12 test shows. Their efficiency is pretty similar. They are both worse than the other 3 filters in the test group at 20 microns.
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That's unofficial garage test data. I asked for official ISO 4548-12 flow test data.
Here's a thread with some insight about that testing.
I don't understand why Mann & Hummel being a major manufacturer, would not perform that filterization test on the filters?
Why do you think they don't?
I'm going to say cost. That's what I was thinking.
Mann+Hummel is huge, so they probably have their own test lab(s) that can run all ISO test specs. Fram has their own test lab, as probably most other big name filter companies.
According to Wix they do iso 4600 filter testings.. which are tougher..
Lol are you sure that’s what they say?
That's what they said I just sent an email back to technical department, questioning them..
You haven't really indicated how you are driving the car and what climate.
If you're tracking the car you might consider Fram Racing line. I think they are generally 94% at 20 micron.
But for std. driving, sometimes spirited Wix (std not XP) will be fine. Fram TG, XG, Endurance will be more than fine.
If you're tracking the car you might consider Fram Racing line. I think they are generally 94% at 20 micron.
But for std. driving, sometimes spirited Wix (std not XP) will be fine. Fram TG, XG, Endurance will be more than fine.
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I’m in Roanoke VA, we have an autocross series in town and VIR isn’t far, so the car sees some days of both each year. Next oil fill will be M1 Supercar 5w50.
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Yes hence my incredulity above.
I actually happen to have performed ISO 4600 based tests back in a previous life, so it caught my eye.
Listening to somebody on another forum, Big mistake, I got a response from Wix. After I emailed them personally..
Hello Scott,
WIX Oil Filters provide excellent engine protection using conventional, synthetic, or synthetic-blended motor oils, as recommended by the OE vehicle manufacturer, for normal and severe driving conditions such as stop and go traffic, dirt roads, construction sites, short trips, and interstate travel. WIX filters are recommended for OEM oil and filter change intervals, typically 3,750 to 10,000 miles, not to exceed 12 months. This filter traps up to 50% more dirt and contaminants than Protec with the best combination of capacity & efficiency for severe conditions. When applicable, WIX flexible silicone anti-drainback valve protects against dry engine starts past the traditional filter change interval. Laboratory Test Performance per ISO 454812 18 grams dirt (WIX 51515), 99% efficient at 23 microns (Based on WIX 51515, WIX 51356, WIX 57060)
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