Re: [AMC-List] best oil filter for a 390?

["Jim Blair" <carnuck@xxxxxxxxxxx>]

A: The 4.0L changed filters at some point ('91 to '93ish) from a 51626 
(metric thread http://tinyurl.com/o5qc6 ) to 51085 (std thread) to match the 
Mopar fleet. A 304 CJ should use a 51258 (along with most other AMC V8s). 
http://wixfilters.com/filterlookup/index.asp

There is more to a filter than just the Oring and thread size! If you go to 
an oversize filter, I suggest you also prefill it (so the motor isn't 
running dry on startup) and get one with an anti-drainback valve  (ditto) 
Hopefully no-one else will have the heartache of a customer we had last week 
who built a new AMC motor and had a Fram collapse (he dutifully changed it 
but didn't know chunks of it were jammed inside the oil pump outlet) in less 
than 100 miles, making his engine an EXPEN$IVE PO$.


From: msproviero@xxxxxxxxxxx
Subject: Re: [AMC-List] best oil filter for a 390?
To: amc-list@xxxxxxxxxxxx
Message-ID:

<070420060817.4633.44AA24290001481C000012192200737478019D0A0790019D9F9C03@xxxxxxxxxxx>


I use an oversize Mobil1 filter on everything.  Just pulled the
stock application off the shelf and matched the thread/diameter
with the biggest one there.  To be honest, my CJ hasn't run in
so long that I forget whether the 304 I swapped in shares the
same filter thread/diameter with the 4.0.  Anyway, FYI the big
Mobil1 MI-301 fits the 4.0.  If the 4.0 is the same as the V8's
(and 258's), there you go.  I'm out-of-town right now, or I
would go out in the barn and verify.

Before I switched to synthetic in everything, I used Wix. I had
the opportunity to witness a Wix cut open next to a Fram by the
Dana salesman at a parts store I worked at in high school.


http://www.greatlakes4x4.com/showthread.php?t=4097

http://www.greatlakes4x4.com/showthread.php?t=4101


-Spro

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