Which WIX to use?

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I have a 2007 Dodge Grand Caravan. I see two filter options. One shows as the cross reference to the MOPAR, the other shows as the application to on Wixfilters.com. I am a bit confused as the differences between the two. Which one should I use? And why? Why the differences? The first one shows 51085 Part Number: 51085 UPC Number: 765809510852 Principal Application: Chrysler/Dodge/Jeep Vehicles (91-08), Mitsubishi Eclipse (95-99); Caterpillar 3 Series Excavators, 9 Series Loaders, Kubota All Applications Style: Spin-On Lube Filter Service: Lube Type: Full Flow Media: Paper Height: 3.790 Outer Diameter Top: 3.660 Outer Diameter Bottom: Closed Thread Size: 3/4-16 By-Pass Valve Setting-PSI: 8-11 Anti-Drain Back Valve: Yes Beta Ratio: 2/20=15/28 Burst Pressure-PSI: 290 Max Flow Rate: 7-9 GPM Nominal Micron Rating: 21 Gasket Diameters Number O.D. I.D. Thk. Attached 2.834 2.462 0.200 The other it shows is 51348 Part Number: 51348 UPC Number: 765809513488 Principal Application: Various Chrysler/Jeep (82-09), Various GM, Saturn (85-07), Lexus (90-09), Saab (67-09), Suzuki (86-02), Toyota (88-09), Ford (03-09), Mazda, Mercury (05-09), Yugo (86-89), Harley-Davidson, Various Lawn&Garden, Farm Equip. All Applications Style: Spin-On Lube Filter Service: Lube Type: Full Flow Media: Paper Height: 3.404 Outer Diameter Top: 2.921 Outer Diameter Bottom: Closed Thread Size: 3/4-16 By-Pass Valve Setting-PSI: 8-11 Anti-Drain Back Valve: Yes Beta Ratio: 2/20=21/37 Burst Pressure-PSI: 275 Max Flow Rate: 7-9 GPM Nominal Micron Rating: 21 Gasket Diameters Number O.D. I.D. Thk. Attached 2.734 2.430 0.226
 
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Which engine code do you have? The 1348 is a small filter they used on engines like the DOHC I-4, and the 1085 is a large filter used on V-6 and V-8 engines. Neither will seal correctly if it is not on the right engine. The 1348 is about an inch smaller in diameter than the 1085.
 
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Take your pick. If you have room, go even bigger if you want. Just about any 3/4-16 thread filter, with some exceptions AND accounting for any room limitations, will work for you.
 
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The first is bigger, may flow better at start up. The second filters better (finer) according to the beta ratios you posted. Maybe try a lookup on a 51516. It is bigger than the 51348 but has better beta ratios than the 51085, if I recall correctly.
 
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river_rat, are you sure about the beta ratios? Gary???? Wix seems to flip flop with these two filters a lot. I had the opposite problem with my '05 4cyl. Caravan. The OEM crossed to the 1348 of similar size, but NAPA (Wix) catalog recommended 1085 for two years, than changed to the 1348. I went with the 1348 that matched the OEM better. At the WIX site, the 2006 Grand Caravan lists the 51085. For 2007 it lists the 51348 for the same engine/engine vin code. Is there a clearance issue with the 2007 model? My choice would be to go with the one closest to OEM in size...just my opinion. I would call WIX up and ask them to explain. Please share their answer with us. And.....this is why it is good to be observant with aftermarket filters. I had some similar issues with a Kubota filter.
 
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 Originally Posted By: doitmyself
river_rat, are you sure about the beta ratios? Gary????
Yes. If the data on the post is correct. Higher beta numbers = better filtration. Simply put, 2/20=15/28 means that at 2 micron particles, 1/15th of them get through and at 20 micron particles, 1/28th of them get through
 
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 Originally Posted By: doitmyself
river_rat, are you sure about the beta ratios? Gary????
Well, the bigger filter has the better numbers. It could be because of the size difference for all I know. Here you get progressively better filtering with a diminished rate of return. Part Number: 51348 UPC Number: 765809513488 Principal Application: Various Chrysler/Jeep (82-09), Various GM, Saturn (85-07), Lexus (90-09), Saab (67-09), Suzuki (86-02), Toyota (88-09), Ford (03-09), Mazda, Mercury (05-09), Yugo (86-89), Harley-Davidson, Various Lawn&Garden, Farm Equip. All Applications Style: Spin-On Lube Filter Service: Lube Type: Full Flow Media: Paper Height: 3.404 Outer Diameter Top: 2.921 Outer Diameter Bottom: Closed Thread Size: 3/4-16 By-Pass Valve Setting-PSI: 8-11 Anti-Drain Back Valve: Yes Beta Ratio: 2/20=21/37 Burst Pressure-PSI: 275 Max Flow Rate: 7-9 GPM Nominal Micron Rating: 21 Gasket Diameters Number O.D. I.D. Thk. Attached 2.734 2.430 0.226 A little longer Part Number: 51516 UPC Number: 765809515161 Principal Application: Ford/Lincoln/Mercury (81-09), Chrysler/Jeep/Mitsubishi (02-09), Mazda Trucks (94-07) All Applications Style: Spin-On Lube Filter Service: Lube Type: Full Flow Media: Paper Height: 4.828 Outer Diameter Top: 2.921 Outer Diameter Bottom: Closed Thread Size: 3/4-16 By-Pass Valve Setting-PSI: 8-11 Anti-Drain Back Valve: Yes Beta Ratio: 2/20=14/31 Burst Pressure-PSI: 275 Max Flow Rate: 7-9 GPM Nominal Micron Rating: 21 Gasket Diameters Number O.D. I.D. Thk. Attached 2.734 2.430 0.226 Bigger diameter ..not much longer Part Number: 51085 UPC Number: 765809510852 Principal Application: Chrysler/Dodge/Jeep Vehicles (91-08), Mitsubishi Eclipse (95-99); Caterpillar 3 Series Excavators, 9 Series Loaders, Kubota All Applications Style: Spin-On Lube Filter Service: Lube Type: Full Flow Media: Paper Height: 3.790 Outer Diameter Top: 3.660 Outer Diameter Bottom: Closed Thread Size: 3/4-16 By-Pass Valve Setting-PSI: 8-11 Anti-Drain Back Valve: Yes Beta Ratio: 2/20=15/28 Burst Pressure-PSI: 290 Max Flow Rate: 7-9 GPM Nominal Micron Rating: 21 Gasket Diameters Number O.D. I.D. Thk. Attached 2.834 2.462 0.200 Bigger diameter and length Part Number: 51515 UPC Number: 765809515154 Principal Application: Chrysler Family of Cars/Trucks (57-70), Ford Family of Cars/Trucks (57-00), Mazda Trucks (94-00), Toyota Landcruiser (71-96) - (Two Quart version is 51773) All Applications Style: Spin-On Lube Filter Service: Lube Type: Full Flow Media: Paper/Glass Height: 5.178 Outer Diameter: 3.660 Thread Size: 3/4-16 By-Pass Valve Setting-PSI: 8-11 Anti-Drain Back Valve: Yes Ends: Metal Beta Ratio: 2/20=13/23 Burst Pressure-PSI: 290 Max Flow Rate: 7-9 GPM Nominal Micron Rating: 21 Gasket Diameters Number O.D. I.D. Thk. Attached 2.834 2.462 0.200
 
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 Originally Posted By: river_rat
 Originally Posted By: doitmyself
river_rat, are you sure about the beta ratios? Gary????
Higher beta numbers = better filtration. Simply put, 2/20=15/28 means that at 2 micron particles, 1/15th of them get through and at 20 micron particles, 1/28th of them get through
Am I missing something? River_rat and Gary have different answers. Someone please explain
 

robl

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Yes, according to WIX, the 3.3 uses 51348, however, when I take the MOPAR part number on WIX, the W0-90 or whatever the MOPAR filter is, which is the manufacturer part, Wix now says 51085. That is why I was confused. Why they say to use 51348 on the application look up, but then when you use the section to enter a competing part (Mopar) it says the other.
 
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 Originally Posted By: river_rat
 Originally Posted By: doitmyself
river_rat, are you sure about the beta ratios? Gary????
Yes. If the data on the post is correct. Higher beta numbers = better filtration. Simply put, 2/20=15/28 means that at 2 micron particles, 1/15th of them get through and at 20 micron particles, 1/28th of them get through
Here's how you read it rr 2=1/2=50% 20=19/20=95% 50% of the 15um (and greater) particles are filtered 95% of the 27um (and greater) particles are filtered It could be expressed as Beta15=2 Beta27=20 or Beta2=15 Beta20=27 In most automotive filters the ratios are fixed while the particles are all over the place. Sometimes that fall into neat numbers like 15um Absolute (beta75) Notice that the 2/20 is constant across most Wix filters Notice that the x/xx is varied across most Wix filters. Beta75 is 74/75th's efficiency Beta2 is 1/2 efficiency Beta1000 is 999/1000 efficiency Beta(N)= N-1/N = efficiency at the specified particle level (and greater - an overlooked aspect).
 
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 Originally Posted By: robl
Yes, according to WIX, the 3.3 uses 51348, however, when I take the MOPAR part number on WIX, the W0-90 or whatever the MOPAR filter is, which is the manufacturer part, Wix now says 51085. That is why I was confused. Why they say to use 51348 on the application look up, but then when you use the section to enter a competing part (Mopar) it says the other.
Don't sweat it. Buy the little one ..and go buy a $2.47 ST8 when you get to Wally's ..or a FL300 MotorCraft ..or the '90 MOPAR ..and see if they fit. If they do ..and don't present any conflicts with the rest of the hardware ..aren't hanging so low that it will be hit by something ..USE THEM. My son's NEON spec's the dinky filter. It can fit the FL1A/51516/PH8A/ST8 ..but it sticks down below the pan. So, it's a FL300/ST16/51085 .......or not.
 
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Here's how I'm reading it, Gary: The first numbers are the micron ratings the second set is the beta for the corresponding micron size particles tested: e.g., 2/20=15/28 So, when in my post I said for 2 microns, 1/15th got through, I calculated it this way: 100-[(1/15)*100] which should be correct and correspond to efficiency. Example: For a beta of 10 (for simplicity) calculated this way one gets 90% efficiency, which is the same as saying 1/10th got through the filter. Sorry if I wasn't clear in my post.
 
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 Originally Posted By: Gary Allan
 Originally Posted By: robl
Yes, according to WIX, the 3.3 uses 51348, however, when I take the MOPAR part number on WIX, the W0-90 or whatever the MOPAR filter is, which is the manufacturer part, Wix now says 51085. That is why I was confused. Why they say to use 51348 on the application look up, but then when you use the section to enter a competing part (Mopar) it says the other.
Don't sweat it. Buy the little one ..and go buy a $2.47 ST8 when you get to Wally's ..or a FL300 MotorCraft ..or the '90 MOPAR ..and see if they fit. If they do ..and don't present any conflicts with the rest of the hardware ..aren't hanging so low that it will be hit by something ..USE THEM. My son's NEON spec's the dinky filter. It can fit the FL1A/51516/PH8A/ST8 ..but it sticks down below the pan. So, it's a FL300/ST16/51085 .......or not.
My scenario is exactly like the neon's, and its interesting, because I used to own a neon. I know the filters fit Saturn/Neon. I have a 1348 on my car currently, but I have a couple 1516's that I'm gonna use over my next few OCI's. I checked all the specs, all the sizes, thread, o-ring, everything is identical to the 1348. In short, if the caravan specs a 1348, the 1516 will work (Unless there are other clearance issues)
 
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 Quote:
The first numbers are the micron ratings
I know it's confusing. The first numbers are the Beta numbers used to express the efficiency levels on the right column. 2= 1/2= 50% 10 would = 9/10 = 90% 20 would = 19/20 = 95% 75 would = 74/75 = 98.7% 200 would be 199/200 = 99.5% etc...etc. ..at whatever micron level that they're remarking on (pulling numbers out of my behind) Hence the 2/20 = 7/28 in the way WIX displays them would mean 50% of the 7um and greater particles and 95% of the 28um and greater particles In the most accepted filtration nomenclature it would be Beta2=7 Beta20=28 or long hand At a 50% efficiency level, this filter captures 7um and greater particles under this ISO standard At a 95% efficiency level, this filter captures 28um and greater particles under this ISO standard.
 
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 Originally Posted By: robl
Yes, according to WIX, the 3.3 uses 51348, however, when I take the MOPAR part number on WIX, the W0-90 or whatever the MOPAR filter is, which is the manufacturer part, Wix now says 51085. That is why I was confused. Why they say to use 51348 on the application look up, but then when you use the section to enter a competing part (Mopar) it says the other.
If the longer one is just longer but has all the same specs, and you have enough for it to fit on the car, then use the longer one. It's this way with my 2004 Altima V6. Nissan and others (NAPA, WIX, etc) call for the short (2.5" long) filter, but the longer version (3.5" long) fits just fine.
 
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