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Unread 11-16-2011, 07:46 AM   #1
mav0016
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Join Date: Jun 2008
Location: Ottawa
Posts: 15
Changing oil on 54 CJ3B

Hi guys,

I just bought an old CJ3B and I was wondering if anyone else here has one and if you've changed the oil? The oil plug is huge! Do you know the size so I can buy the right socket. I'm assuming 5w-30 oil would work? I found a filter online and the only other thing is do I just put the oil down where the dipstick is? Havn't noticed anywhere else yet.

I'm still waiting for the owners manual in the mail.

Thanks!

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Unread 11-16-2011, 01:36 PM   #2
Mickey_D
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1997 ZJ 
 
Join Date: Aug 2008
Location: 40 3'42.36"N 112 2'16.73"W, Utah
Posts: 6,825
Is yours the element style filter? The one where you remove the cap and the filter is a metal element with a handle on it and you pull the filter out of the housing?

If so, O'Reilly's sells replacements. Original specs call for 10W30 oil.

And yes, the oil gets poured in the dipstick hole so long as you have the type with what looks like an old style radiator cap that forms the handle of the dipstick.

In the picture below you can see the oil filler cap in the upper portion of the picture. Of course yours will look different as you have the L-head engine and I have the F-head, so different valve covers. You can also see the oil filter canister in the upper left corner of the pic.
valvecover.jpg  
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Unread 11-16-2011, 06:06 PM   #3
mav0016
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Thanks Mickey! I have the f 134 too. The only other thing I'm missing is the size of the socket for the oil plug. Do you know?
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Unread 11-16-2011, 06:48 PM   #4
jeepdaddy2000
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Original specs call for straight 30WT. Personally, I feel a 5 or 10/30 is a bit too thin for an older used engine, unless your running in extremely cold temps, then a switch to a 10/30 or 5/40 diesel would suffice. Summer would see me either run a 10/40 or (even better) 15/40 diesel rated oil.
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Unread 11-16-2011, 06:50 PM   #5
VintageJeeps
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1981 CJ7 
 
Join Date: Nov 2011
Location: Australia, New South Wales
Posts: 48
Hi guys i have 2 jeeps with the F-134 one in a 51 willys pu and the other in a 1953 M38A1 and the oil plugs measure 1' 1/8
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Unread 11-16-2011, 06:53 PM   #6
VintageJeeps
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Yes... also it doesnt get cold here so i run 20W/50W oil in my engines
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