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Old 12-10-2015, 12:18 AM   #41
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Check the times when edited and when you posted.
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Old 12-10-2015, 12:21 AM   #42
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You have no idea as to the depths of my laziness and apathy. Hours can pass between the time I click "reply", subsequently get distracted by shiny things, cook dinner, watch some TV, argue a bit with the missus, and finally come back to the PC to find that I forgot to hit the "submit" button.

I consider this a superpower.
It's only a super power if you can subsequently get the security token error and lose all of your post.
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Old 12-10-2015, 01:05 AM   #43
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For the record I was never intending to use a fuel filter for my oil. I was curious if 2manyhobyz ((or anyone else) had any luck good or bad with the 551318. *EDIT I guess I did say I'd like to try the larger filter. I should have said A larger filter before digging into that 551318 filter specs as a sidenote*

I couldn't tell you. I would assume so since you have a picture of the filter I had posted installed? I was under the impression you had run that filter. EDIT I realize that a P551318 and napa 551318 (now 1318) are two very different filters.
I did have the napa 551318 on the car and it was only about a half inch of clearance. I would have continued to use it but I wanted to upgrade to their silver or gold line which is a better filter, but it is a bit of an odd ball and they didn't produce in their better lines. So the Purlator ended up the best compromise for me.
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Old 12-10-2015, 02:40 PM   #44
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When the new high pressure diesel injection (common rail or whatever terminology you prefer) arrived on the scene, the particulate size the filters allowed to pass was significantly less and new machines would stop working and the older ones would keep going. Most of my customers have lousy fuel handling practices and had problems with mechanical injection engines anyway.
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Old 12-11-2015, 12:17 AM   #45
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When the new high pressure diesel injection (common rail or whatever terminology you prefer) arrived on the scene, the particulate size the filters allowed to pass was significantly less and new machines would stop working and the older ones would keep going. Most of my customers have lousy fuel handling practices and had problems with mechanical injection engines anyway.
The solution for that was adding a prefilter/water separator/fuel heater. It had to be done on Dozers and excavators since those machines get filled from a slip tank in the operators pickup and they don't always keep them clean. Filters out rocks, dirt clumps and small children. Helps to keep the fuel in good shape when its -40 below too.

Diesel Pro 243 Unheated Fuel Water Separator, 243050RLDAVK-0, Davco Mfg
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Old 12-12-2015, 02:00 PM   #46
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Our solution is to advise them to put a fine filter on the hose from the portable tanks and to not pre-fill machine filters.
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Old 12-12-2015, 03:31 PM   #47
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I've used the Donaldson P551318...well for its intended purpose as a fuel filter. Never considered using it as an oil filter. It lists as a 9 micron filter per Donaldson's specs https://dynamic.donaldson.com/WebSto...63&item=742494

WIX lists it as 10 micron Wix 33403 & Napa 3403 Fuel Filter: FleetFilter Secure Store - Wix, Fram, Baldwin, Luberfiner

Filter Bags | Micron Size Comparison Chart | Clearstream Filters Inc. This is a handy reference chart for micron sizes.

My UWAG (uneducated wild *** guess) is that if a filter can catch particles down to 9 or 10 microns it would have a shorter service life vs a filter of the same size that can filter to 21 or even 40 microns. It would be interesting to see the particle count in the oil between 21 micron and 9 micron. My bet is there many more 9 micron particles and the larger 551318 filter might not have a much longer service life over the stock filter. The oil will stay much cleaner. I would love to do oil samples back to back with the same oil, change interval and driving conditions between a stock filter and the 551318. Then again I'm sure I will burn it off faster than anything to really matter.
I wouldn't put too much stock in manufacturer "micron" specs unless there is a first pass efficiency attached. Amsoil is one of the few I have seen that provide that data:


Technically a manufacturer can advertise a filter as "10 micron" even if it only catches 10% of particles that size.
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Old 12-13-2015, 01:19 AM   #48
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I've always just used the Purolator Pure One PL14459. It's the one specified for the B6t and BPt motors found in mazda 323 GTX's. slightly bigger than the non turbo version specified in the Miata.
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Old 12-28-2015, 04:34 PM   #49
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I've always just used the Purolator Pure One PL14459. It's the one specified for the B6t and BPt motors found in mazda 323 GTX's. slightly bigger than the non turbo version specified in the Miata.
Ive used the PL14449 for years its also used on the Honda S2000 and is a typical upgrade for most honda engines that use a smaller filter.
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