Larger Oil Filters....Fact or Fiction?

The_Oz · Jul 31, 2002

Well,

I'm pretty sure you've all read about it on the web regarding the use of larger than OEM filters for your vehicles. I'm just curious if this has any side-effect at all (ie. oil pump wear, loss of pressure, etc.)? I'm currently using a filter that is made for V6 Mazdas (I currently have a 4-banger Mazda). The diameter, hole design, etc. is just the same. The only difference is the length of the filter (roughly 1.5" more than OEM).

So, is the use of larger oil filters detrimental? Or is it really a benefit as others say - especially when used for extended drain intervals?

Thanks,

Oz

VaderSS · Jul 31, 2002

The only detriments are discussed here.
http://theoildrop.server101.com/cgi/ultimatebb.cgi?ubb=get_topic;f=6;t=000039

Benefits;

More filter area(for most) for less pressure drop and more capacity.

Increased oil capacity.

Patman · Jul 31, 2002

I've used the largest filter I could find on all my cars for many years now. FWIW, I had a 95 Escort GT and ran the larger filter on it that's specified for the Probe GT. That stock filter was so tiny it looked more like a thimble to me!

The_Oz · Jul 31, 2002

Thanks Vader,

How that got passed my search trigger-finger, I do not know

Anyway, the post did not really mention any tangible "ideas" as to the side effects of using larger oil filters...apart from clearance problems, and possible damage from something hitting it(?).

Regards,

Oz

jason07-1zzfe · Jul 31, 2002

quote:

Originally posted by The_Oz:
...apart from clearance problems, and possible damage from something hitting it(?)...

That is because those are the only negative effects.

And no one mentioned the increased media area will in addition to increasing dust holding capacity, also theoretically increase the efficiency. Because you have the same volume (as regulated by oil pump) but more media area therefore you will have a lower media velocity (or air to cloth ratio or oil to cloth in this case

)
That means the particles will be travelling slower through the media therefore there will be a better chance of them being arrested.

[ August 01, 2002, 12:34 PM: Message edited by: Jason Troxell ]

The_Oz · Jul 31, 2002

quote:

That means the particles will be travelling slower through the media therefore there will be a better chance of them being arrested.

Jason,

Good point. Is this the reason why there is the possibility of pressure drop?

Patman,

I always thought the bypass is only for startup

Thanks Guys,

Oz

EDIT: Grammar mistakes.

[ August 01, 2002, 01:42 PM: Message edited by: The_Oz ]

jason07-1zzfe · Aug 1, 2002

Well AFAIK the pressure tap is AFTER the filter so no, a filter with more area should raise the pressure there if anything, since there will be less pressure drop accross the filter. If the pressure tap was before the filter then yes it would go down.

The bypass works anytime. It is simply a spring inside the filter (or I have heard GM puts inside engine instead) that opens up at a certain pressure drop. What that pressure drop is and when it will open, I don't have enough info to say and it would vary. But Patman is correct the higher media area will lower the pressure drop there for opening bypass less.

Patman · Aug 1, 2002

That's an excellent point Jason, I never thought of it that way! Also, as I believe I mentioned in the other thread similar to this, the bypass valve will operate less in a longer filter, so the oil is being filtered a higher percentage of the time. I'm not sure at what rpm most oil filters generally go into bypass mode, but for example let's say in one particular case it's 3500rpm. With the longer filter it might extend that rpm to 4000. Cleaner oil is always good.

Al · Aug 2, 2002

I use larger oil filters than recommended in 5 out of 7 cars I maintain. All later model Nissan products can use the K&N 1010, Mobil 1 M1-110 or Pure One 14620 (I think that's the number). All GM's using the PF-47 can use the PF-52 (No bypass valves here)

jjbula · Aug 2, 2002

Haven't done the research...

Do you know what larger filter can go on a 2001 V-6 Camry?

Currently has the equivalent of Fram 3614

Patman · Aug 3, 2002

Al, I believe the PL and L14620 filters cross reference to the Mobil 1 M1-106 actually. I know this because my mom's 94 Probe GT uses the L14620 and I remember looking up the M1 part # once.

UncleS2 · Aug 3, 2002

jjbula, it so happens that the 96-current Neons call for that same filter, Fram 3614, AC PF 53. The threads & gasket match up well on our Neons for the Fram PH 16, AC PF 13, Wix 51085, etc. This filter size is very little longer than stock, but much larger diameter("Std" oil filter dia vs the "thimble" dia of the Fr 3614). If your car can accomodate the latger dia, these should work. If you can also use a longer filter(not a good idea on our Neons!), a Fram PH 43(?) or Motorcraft FL 300 will work. (Evil Fram #'s are for cross ref only!

) If you can use a *Much* longer filter, the Motorcraft FL 1A, Fram PH 8A should work too.

Patman · Aug 3, 2002

Does anyone know what longer filter fits the late model Hondas? (which currently use the PF1127 or PL and L14459 or M1-104)

Al · Aug 3, 2002

quote:

Originally posted by Patman:
Al, I believe the PL and L14620 filters cross reference to the Mobil 1 M1-106 actually. I know this because my mom's 94 Probe GT uses the L14620 and I remember looking up the M1 part # once.

Wouldn't want to say you are wrong but I have cross referenced all three of these. It's very possible though that an M1-106 may be cross referenced with the L14620. I can tell you I have used all three of these on a 01 Sentra

Later,
Al

Dominic · Aug 3, 2002

I believe they're worth doing. They certainly can't filter worse, and being larger they are capable of handling more debris long term. The awesome thing about a longer filter is that it doesn't cost a penny more than a short stock one!

Patman · Aug 3, 2002

Al, next time you're in the store where the M1 filters are (we don't have them up here) compare the M1-106 to the M1-110. If it works out the 106 is even longer you might have just found yourself an even longer alternative!

If I can find the longer filter for my wife's car that would make removal much easier, as then I could reach it without having to stick my hand in so far. There is tons of room for a longer filter on my wife's car too.

If nobody knows the longer filter for a Honda, does anyone know any good Honda message boards where they might have this info? I don't know why I didn't look into this sooner, we've had the car almost three years now and I should have been running a longer filter (if there is one) on this car since the beginning!

The_Oz · Aug 3, 2002

quote:

Does anyone know what longer filter fits the late model Hondas? (which currently use the PF1127 or PL and L14459 or M1-104)

Patman,

What year and model Honda are you referring to? I might be able to help out.

Regards,

Oz

Patman · Aug 3, 2002

My wife's car is a 2000 Civic EX sedan (106hp engine)

TooSlick · Aug 3, 2002

Patman,

Most of my honda/Acura customers run the Amsoil SDF-36 oil filter in place of the SDF-20 that is speced for this engine. The by-pass valve setting is the same for both filters,and the SDF-36 is about 1/3 longer.

I have been following the oversized filter practice on my vehicles for many years with excellent results. If you have an application where the original oil filter had an anti-drainback valve, make sure the larger filter does as well.

TooSlick

jjbula · Aug 3, 2002

quote:

Originally posted by Stuart Hughes:
jjbula, it so happens that the 96-current Neons call for that same filter, Fram 3614, AC PF 53. The threads & gasket match up well on our Neons for the Fram PH 16, AC PF 13, Wix 51085, etc. This filter size is very little longer than stock, but much larger diameter("Std" oil filter dia vs the "thimble" dia of the Fr 3614). If your car can accomodate the latger dia, these should work. If you can also use a longer filter(not a good idea on our Neons!), a Fram PH 43(?) or Motorcraft FL 300 will work. (Evil Fram #'s are for cross ref only!

) If you can use a *Much* longer filter, the Motorcraft FL 1A, Fram PH 8A should work too.

Thanks a bunch.
I think the longer one will be better. The exhaust manifold is very close (filter on front of engine)

Larger Oil Filters....Fact or Fiction?

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