Oil filter

1941 - 1945, MB, GPW Technical questions and discussions, regarding anything related to the WWII jeep.
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Mark Jesic
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Oil filter

Post by Mark Jesic » Fri May 22, 2020 1:50 am

Hi guys, slight problem, i have a trickle of oil coming out of the top of my oil filter housing. So do i replace the copper washer, or tighten or loosen the nut on the lid ? The reason for asking this is on my previous jeep i tightened the nut and ended up having oil drip all over my engine, it was a right mess. I have the purolator casing. Thanks in anticipation.

dinof
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Re: Oil filter

Post by dinof » Fri May 22, 2020 6:53 am

I am assuming your leak is the hold down bolt that keeps the lid on? I had a very ,very slight leak so I ditched the copper ring and used a fiber gasket and it worked better.
Dino Falabrino
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Mark Jesic
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Re: Oil filter

Post by Mark Jesic » Fri May 22, 2020 8:00 am

You assumed right Dino, sounds like a good call on the fibre washer, thanks. Its not a massive leak, just annoying.

Scrumps
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Re: Oil filter

Post by Scrumps » Fri May 22, 2020 11:08 am

Hi,

Your copper washer may have gone hard with age. Might be worth annealing it if you have a heat source.

Nice soft copper washers should seal well.

Scrumps

Mark Jesic
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Re: Oil filter

Post by Mark Jesic » Fri May 22, 2020 1:36 pm

Thanks Scrumps, looks like its a new washer then. I overtightened once on my other jeep, and it was oil all over my engine, hence me being cautious. :D

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Re: Oil filter

Post by Scrumps » Fri May 22, 2020 1:42 pm

Mark,

No need to get a new one.

Just heat the one you have to dull red with a blow lamp and then leave to cool naturally.

Should soften up a treat .

Scrumps

Joe Gopan
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Re: Oil filter

Post by Joe Gopan » Fri May 22, 2020 3:41 pm

Contact your dealer and order the proper Purolator or Fram Cover Bolt Gasket by OEM Part Number. The two are different. Best to change gaskets once and a while instead of overtightening the bolt which collapses the cover and deforms it causing the gasket to leak. These copper gaskets are not hardware store items. Do it right and eliminate the leak.
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HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
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Frankie
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Re: Oil filter

Post by Frankie » Fri May 22, 2020 4:22 pm

Is there a recommended torque range on that filter top cover bolt?

Joe Gopan
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Re: Oil filter

Post by Joe Gopan » Fri May 22, 2020 5:19 pm

Not that I know of. The trick is not to deform the cover. Purolator Bolt Gasket and its' bolt are larger than Fram.
2011 MVPA PIONEER AWARD - MVPA #1064
HONOR GRAD-WHEELED VEHICLE MECHANIC SCHOOL 1960 - US ARMY ORDNANCE SCHOOL(MACHINIST) ABERDEEN PG 1962 - O-1 BIRD DOG CREWCHIEF - 300,000+TROUBLE FREE M-38A1 MILES
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Chuck Lutz
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Re: Oil filter

Post by Chuck Lutz » Fri May 22, 2020 6:25 pm

To add to Joel's post, the FRAM cover is rather cone shaped. The Pur-O-Lator cover is more of a rounded DOME shape and the cover and internal threaded post of them is a different thread size. The copper crush washers are out there but the fiber ones are OK as long as you get the correct washer for the bolt size.

However, you may run across a Pur-O-Lator dome that has a dip where the bolt goes from being OVER-TIGHTENED.
I always check the cover to be sure Bubba hasn't just installed a SECOND gasket which may increase the odds it will leak.

You should be replacing the cover gasket (comes with the oil filter) and the copper crush (or fiber) gasket when you do your oil change.
Chuck Lutz

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Mark Jesic
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Re: Oil filter

Post by Mark Jesic » Sat May 23, 2020 6:56 am

Many thanks for all your help guys, i didnt realize the washers on the fram and puralator were different sizes. :D

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