Best large oil filter?
 

Fram HP6A
Wix 51222R
Wix 57003R
K&N 5001

There is not much info or comparisons on the larger filters, only the 1 quart sizes. Normally, I would lean towards the Wix, but there is no Micron rating on their site. Fram seems to have made some improvements with the HP6A. K&N looks good, but the bypass is a lower 11-17 psi.

What's the best filter from the list above?

I've used k&n since day one and never had a problem. I have no idea as far specs with respect to the others, I think you can't go wrong with any of them.

This is the large K&N HP6002. No bypass at all.
http://www.summitracing.com/parts/KNN-HP-6002/

I use wix 5174

wannabe

WIX racing (R)

Thanks, but this is just the extended version of their small filter.

No one has an opinion on the Fram HP6A versus the others listed?

From what I've seen everyone hates the Frams. I won't use them anymore.

me too!!

My experience and the information on the larger high performance and racing filters listed shows they were develeped to allow larger volumes of oil to be filtered while still providing higher flow volume that can be required in certain oil and sump systems on higher horspower engines where heat builds more quickly in the oil, the oil lines are also larger in size and the oil coolers are alos much larger and the filter has to have a higher volume with less restriction form a larger filter media in square inches to keep these higher flows from either being restricted or by-passed from filtering.
Most of these filters have a much heavier duty construction inside and out than the standard automotive and standard marine engine filters and I doubt you would see issues from any of them and only variances will be the micron size filtering specification and filter media flow rate at certain pressures.

Maybe someone here on OSO like Smitty has some spec. comparisons on them and can share that data.

My bottom line is I think any listed will do a fine job properly applied and there are just to many other items on your engine and boat that should garner more attention than these comparisons. I hope if someone has had real significant failure, damage or proof of something different from one of these specific part numbers, then please share that here.

Best Regards,
Ray @ Raylar

Ill be using Wix 51794R this year and was using the wix 51061R previous years. The 51794 is 2.5 inches longer, not sure if it will make a difference or be any better but they get changed every year so ill give it a go.

These are the small diameter filters. The Wix 51061R mentioned only filters to 61 micron. Although it's not listed on the Wix site, one of their reps also suggested the 5122R, etc only filter to 60 Microns.

I've always avoided Fram in the past, but the HP6A filters to 12 Microns with 20 GPM flow. I may be reconsidering Fram for this application.....

I have HP6a's. They look like a pretty serious filter compared to a regular Fram. They seem hard to get, summit racing has them back ordered right now. I ordered a couple of
moroso hp6 racing filters from CP. anyone have any experience with them?

I use the Donaldson P550832 from Amsoil. It has the flow of the racing filters and super fine filtration, the best of both worlds.

Moroso 22465 - Moroso Race Oil Filters

http://www.summitracing.com/parts/MOR-22465/

Not so. You said you liked the K&N but was concerned about the low 11-17 psi bypass. The HP 6002 has no bypass. I run no bypass valves in the block either so all my oil goes through this filter. No problems.

+1

NAPA GOLD 1794 is made by WIX and has no bypass. 20 micron filtration and 9-11 gallons per minute. Good overall filter. Easy to find.

WIX Racing filter!

my engine builder loves NOx and Fram oil filters !!!!!!

Amsoil offers 3 filters, I use the BIG one, it holds almost 2 quarts of oil. I am a dealer and could set you up to buy it yourself. I don't have the number in front of me but I can look it up pretty easy.

Like your suggestion, but I need to match the HP6A filter (it has a 1 1/2-12 thread). The 1794 has a 1 3/16-16. Damn.

Need to find an HP6 or HP6A replacement that has a high flow rate and NO bypass valve. Letting the 30lb. bypass valve in the filter pad do that job.

Update
 

I had an HP-6A on backorder from Summit, for a couple months now, and they finally just refunded my money. I guess I'll be running the Moroso filters.

Been using the Wix 51222r's for years and never an issue with anything.

fixx
 

oops did not read the whole addy...

Restate I use Wix 51794 a FULL FLOW filter- no bypass.

Wannabe

I like the wix and can get them cheaper.

I just cut open a wix R filter on my chevelle ,had 40 miles on it,when I cut it open the top metal that the center tube is glued fell apart,ive never had one do that before,like the glue was bad, I don't think it was loose yet but when I grabbed it to cut the element out of it,

The 51222r ive had good luck with,i prob use 8-10 a year on the boat and cut everyone open.

ill try and find the picks of the small one that fell apart

Rob


I would think moroso is made by wix or somebody else,or having it made,I know they repackage alot,


what filter does merc use in the 1075 and 1200's?????

I think i remember the 57003R had a larger micro rating, when I called wix once they said one if for asphalt and the other for dirt track, I've never cut open a 57003,

Ive got a thread on here somewhere with all the specs I found

Also when I was researching a fuel water separator high flow w/ a good micron,Wix was going thur there charts and actually told me on a few somebody else made them for them to there specs.

http://www.discountfleetsupply.com/wix51222r.html about 14,oo each

I know when my buddy at Napa would sell them to me for 11 somthing, he said it showed there cost at 9 something,and I bet they got it cheaper than that,thats just what the manager could see.


http://www.discountfleetsupply.com/wix57003r.html

Anybody have any reservations about the flow change and filtration rating when going to the "R" version? I was using the 51060R which offers 28 gm and 61 microm filtration rating whereas using the 51060 or NAPA Gold 1060 gets you 6-11 gm but at 21 micron. My first reaction was more flow is better but if the filter capacity exceeds the pump capacity why give up filtration? I know the can on the R version looks cool and all but...
Anybody have specs on stock 525 EFI pump capacities?

What filter did you wind up using? Everyone is confused about the filter having a bigger stud 1.5" - 12. Including me, I commented on it also about 10 years ago. I recently switched mine out to the larger system. Did not realize I would be limiting my filter options. Amsoil and Donaldson show no cross reference. Using the Wix 51222R currently, I may switch to the K&N HP-5001.

I checked what was ran on the race boat. It was a Fram HP6. It is a 1-1/2" 20 micron filter.
https://www.fram.com/parts-search/HP6A

Anything with an R at the end is not going to have a lot of filtration capability .Like using a mask to stop a microscopic virus.

https://cimg7.ibsrv.net/gimg/www.off...76ee94fc70.jpg

Cheapest place ive found is https://www.filter1.com/catalogsearc...=51222&x=0&y=0 6 was $128.82 free ship, 21.44 each
Ive got a order in now, waiting on them to ship

Rob

61 microns

I have always considered Fram a low quality filter after I cut them open and found a mostly cardboard product. This filter however is a completely different animal. Seems to be better than any of the compatible filters in every way. No drain back but I do not need that. Looks like it just came out in 2017 so a relatively new product.

I'm not a Fram fan either. But they stepped their game up on this filter. It has good reviews on Bob the Oil Guy.

Have you ever seen any cutaways of the HP6? I never have.
If so share them.
I always chuckled because everyone bashed Frams, and for their run of the mill filters maybe so.
But seems every well respected engine builder would have pictures and there'd be a Fram HP6 on it.

Have not seen the HP6a cut apart. But several guys cut open similar filters just different part numbers. Check out the youtube video's, K&N looked good also.