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Changed oil and found this on my block...

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Old 08-28-2013, 01:34 AM
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Default Changed oil and found this on my block...
This is a 5.9 Magnum in my new to me Jeep. Today I found this writing on the block. Does anyone know, or have a good guess, what it means?


 
Attached Thumbnails Changed oil and found this on my block...-0827131843-00_zpsd70645b7.jpg   Changed oil and found this on my block...-0827131845-00_zpsa75fb326.jpg  
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Old 08-28-2013, 01:59 PM
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It has been suggested to me that it may be oil codes. CD CC 30 weight.

Anyone agree?
 
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Old 08-28-2013, 07:41 PM
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Welcome to DF.

I will move you to the correct section. For future reference:
https://dodgeforum.com/forum/dodge-r...ead-first.html

Since this is the 5.9L, I will move you to the 2nd Gen Ram section, since they have the most experience with that engine.
 
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Old 08-28-2013, 08:01 PM
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Looks to me like markings a junk yard would put on something. Motor may have been replaced.
 
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Old 08-28-2013, 09:49 PM
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Ive seem those letters is that combination before, I just cant remeber where.
 
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Old 08-28-2013, 10:31 PM
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Originally Posted by zman17
Looks to me like markings a junk yard would put on something. Motor may have been replaced.
I'll second this.
 
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Old 08-30-2013, 10:13 AM
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Thanks for the input. I don't mind if it has a yard motor but would like to know the miles on it. I'll check with the previous owner.

It runs good. I'll do a compression check.
 
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Old 08-30-2013, 05:58 PM
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Originally Posted by Snowfan
Thanks for the input. I don't mind if it has a yard motor but would like to know the miles on it. I'll check with the previous owner.

It runs good. I'll do a compression check.

If it runs good I wouldn't worry about it at all. If you want to keep it that way, read the plenum sticky and check out all the good info in the FAQ/DIY section.
 
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Old 09-03-2013, 10:32 PM
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Compression numbers...opinions welcome

1...158
2...142
3...160
4...162
5...154
6...150
7...150
8...158

I think I'll go back and do a wet test on 2.

How do those numbers look for a 5.9?
 
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Old 09-03-2013, 10:34 PM
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Number 2 is oddly low compared to the rest, but everything should be good for a while.
 
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