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Not happy with last year's #1806 oil filter
https://www.slantsix.org/forum/viewtopic.php?t=68612
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Author:  wjajr [ Wed Apr 22, 2026 8:52 am ]
Post subject:  Not happy with last year's #1806 oil filter

It's oil change time now that the roads are salt free. For 18 years now I have been using a Napa 1806 oil filter. This last one seemed to leak down over night causing the low oil light to be slow going out on start-up compared to previous filters. It is my understanding that Napa's filter supplier changed, and perhaps the new line is not constructed the same as the old units.

Is there a different recommended filter to prevent the drawn-out low pressure time (~5 seconds) at start up? I aways have used 10W30 oil.

Author:  mr.norm [ Wed Apr 22, 2026 9:14 am ]
Post subject:  Re: Not happy with last year's #1806 oil filter

I have noticed the same thing with the last two that I bought. Two different engines even.

Author:  Jase [ Wed Apr 22, 2026 9:48 am ]
Post subject:  Re: Not happy with last year's #1806 oil filter

Does your oil pump have the stand pipe tube? Mine came loose a few year ago and I suspect it was causing a slow oil pressure rise...

These are options for filters with a standpipe built into them: https://bobistheoilguy.com/forums/threa ... st-1945352

Author:  SlantSixDan [ Wed Apr 22, 2026 5:13 pm ]
Post subject:  Re: Not happy with last year's #1806 oil filter

See here.

My daily driver gets an oil + filter change once a year, and the "quality" of parts store filters is to the point where I spend the premium price for Fleetguard or Donaldson.

Author:  wjajr [ Thu Apr 23, 2026 9:10 am ]
Post subject:  Re: Not happy with last year's #1806 oil filter

The oil pump never had a stand pipe as long as I have had the car; 18 years.

Dan, is the Fleetguard number FJ-3103 which replaces LF701 the filter you use?

Author:  Greg Ondayko [ Thu Apr 23, 2026 9:59 am ]
Post subject:  Re: Not happy with last year's #1806 oil filter

Quote:
See here.

My daily driver gets an oil + filter change once a year, and the "quality" of parts store filters is to the point where I spend the premium price for Fleetguard or Donaldson.
So, wix 51515 is on the naughty list?

Sorry, Da,n your linky is blocked here at work; will do additional clickage on a different connection later.

Greg

Author:  SlantSixDan [ Thu Apr 23, 2026 1:04 pm ]
Post subject:  Re: Not happy with last year's #1806 oil filter

Quote:
Dan, is the Fleetguard number FJ-3103 which replaces LF701 the filter you use?
Naw, it's a completely non-Slant-6 engine. But if I were shopping for a dependably-very-good oil filter for a Slant-6 today, it'd be a Fleetguard LF3487 or Donaldson PS50008 (premium media, no standpipe),

or Fleetguard LF551A (no standpipe),

or Fleetguard LF701 or Donaldson PS54403 (should have standpipe but I haven't looked).

Author:  wjajr [ Thu Apr 23, 2026 2:10 pm ]
Post subject:  Re: Not happy with last year's #1806 oil filter

Thanks Dan.

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