Old oil filter styles - Off-Road Forums & Discussion Groups
Jeep-Short Wheelbase All discussion of short wheelbase Jeeps: CJ, TJ, YJ and JK

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post #1 of (permalink) Old 03-06-2008, 01:44 PM Thread Starter
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Old oil filter styles

Anybody else ever hear this? A couple of weeks ago I called my favorite parts guy, who owns an old-fashioned mom 'n pop store, to make sure he had a Wix oil filter for my '78. He was busy so he called me back about ten minutes later. "I found four in the warehouse in Litchfield. I'll have one here tomorrow."

He told me that for quite a few years the spin-on filters have been made with metric threads, so there was nothing in current or recent production using the American thread filter my 258 needs.

He's confident that the filters will still be available for many years, but I had him get two. Next oil change I'll use the second and order a replacement. If ever he can't get one I'll have a couple of months to devise a backup plan.

EVERYTHING's easy for the guy who doesn't have to do it.
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post #2 of (permalink) Old 03-06-2008, 01:55 PM
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Humm.. my '83 takes a PH8A... pretty common... But I buy the Cheap WalMart Tech filters.
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post #3 of (permalink) Old 03-06-2008, 03:34 PM
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JL,
Hmmmmm, I can't remember what my 1986 took, when I had the engine out eons ago I had my toolmaker buddy machine me a new threaded nipple piece that screws into the block so that the 258 now takes the same filter as the 5.0 in my 1990 YJ. All it takes is an allen wrench to unscrew it from the block. I also made identical fresh air boxes for the air filters on both Jeeps so they both take the same air filter too. I like to keep things simple.

BOOGER

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post #4 of (permalink) Old 03-06-2008, 03:57 PM Thread Starter
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Yep. when it gets difficult to find the old filter, that's probably what I'll do. Or I might make a remote installation, to get it away from the motor mount.

It would be nice to know when the switch-over was made. Will?

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post #5 of (permalink) Old 03-06-2008, 04:18 PM
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I know my 88YJ 4.2/258 takes a PH3985, or something like that, and there's a yellow metric thread label on the top of my grill, with a little pictograph symbol pointing to the oil filter thread. "M-something-x-something."

Sorry, the YJs at home, and I'm not.
Pete

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post #6 of (permalink) Old 03-06-2008, 04:33 PM
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Yup, makes it easy to remember the YJ filter.... 3985.... seems there is a steam engine with that number.

The older one should be a 3/4" thread. I doubt they are going to disappear though. Just look at the old canister type filter. You can still get those for the flat fenders and even the M38A1 which used a different one than the CJ's.

"As the circle of my knowledge grows, so grows the circumference of the unknown." - Isaak Newton
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post #7 of (permalink) Old 03-06-2008, 06:18 PM
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If you ever have trouble finding one Jim Lou, Napa Gold oil filters are made by Wix. That's what Eddie gets once a year.
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post #8 of (permalink) Old 03-06-2008, 07:58 PM
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CE is correct. NAPA gold are WIX. I have never had a problem yet finding them for mine. (thank goodness as it seems to eat them...........usually about every 1500m........I can tell by the oil pressure........has since I've had it )

My air filter hasn't been a problem either. All I have to do is ask for one for an 89 2.8 Z24 cavalier. (what I ended up with after putting pwr brakes on it and starting (never finished) a snorkle install)

BUY MY CUSTOM STICKERS!!!!!!

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post #9 of (permalink) Old 03-07-2008, 07:21 AM Thread Starter
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Quote:
That's what Eddie gets once a year.
Whether he needs it or not.

I do the change twice a year, whether he needs it or not, which works out to about 1k miles.

EVERYTHING's easy for the guy who doesn't have to do it.
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post #10 of (permalink) Old 03-07-2008, 08:00 AM
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I too find it hard to believe that it will be difficult to find oil filters for the 4.2L. I had used the same filter on my Chevy 5.3L engine and the Jeep 4.2L, when I had the Chevy.

-- mike
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