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Old 07-17-2016, 12:28 PM   #1
Mini-Skoolie
 
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3116 Oil change

Hello,

Does any one know how much or which type of oil would be used for a 1991 Thomas with a cat 3116? Would the rotella T 15w40 from sams club work?

Thanks

Nate
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Old 07-17-2016, 02:29 PM   #2
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Check the oil classifications on the container. Basic explanation is here.
https://www.dieselnet.com/tech/lube_classifications.php

There are two different oil pans, the shallow one which I'm guessing you have capacity is 20qts. Don't know the other one but it's a lot more. Specs are easily available with a quick google.
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Old 07-17-2016, 02:42 PM   #3
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Yes, Rotella T meets the CAT specs ECF1a ECF2 and ECF3.

Cat recommends:
10w30 in temps of 0F to 104F
15w40 in temps of 15F to 122F

The 10w30 will get you slightly better fuel economy. Its what I run in my big CAT truck.
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Old 07-17-2016, 02:47 PM   #4
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Are these engines the exact same as the marine 3116? I found a publication from cat saying that multi-weight oil is not recommended for the cat 3116 marine engine?

Cat publication # SEBU-6251-12
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Old 07-17-2016, 03:12 PM   #5
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The marine variant has a different injection pump and needs a single grade oil.
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Old 07-17-2016, 03:13 PM   #6
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Quote:
Originally Posted by wunderhut View Post
The marine variant has a different injection pump and needs a single grade oil.
Ok Thanks. I'll look for some 10w-30.
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Old 07-17-2016, 03:34 PM   #7
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People obsess over oil WAY too much. Use a good brand of engine oil that meets the specs for your engine.

I just dug out my Cat 3116 engine manual that came with my 1991 bus. If you really want to get anal about it the manual recommends that you use only Cat oil that you can buy at your friendly local Cat dealer. Probably at a price nearing the price of a gallon of Starbucks coffee


The next paragraph states that if you must be an idiot against all of their well thought out marketing recommendations you can use API specification CD,CE/SF or CE/SG

I personally for years, have been using what ever diesel oil was the cheapest diesel oil at the local farm store with no ill effects. Last semi had 1.5 million miles on it when I retired. We did pull the pan at 900,000 to have a look see at the bottom end and put the bearings back in.


I'll sit back now and enjoy the show.

Dick
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Old 07-17-2016, 04:23 PM   #8
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I run 15W40 in my diesel engines. Rotella, Delvac, Sam's Choice (or whatever WalMart carries) ... it's all the same to me. I even run the same thing in my Suburban (5.7 gas engine, 150K miles). The shop I use for all my service ... I have no idea what brand of oil they use, but it is a 15W40 oil.
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Old 07-17-2016, 04:44 PM   #9
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Quote:
Originally Posted by somewhereinusa View Post
People obsess over oil WAY too much.

Dick
Tru dat!!!

I've seen forums ban members over engine oil, name calling and people getting butt hurt because they cannot debate properly!

Read the specs, find reputable product & seller, pop the top and pour!
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Old 07-17-2016, 05:16 PM   #10
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If you have a Rural King they have oil for cheap!
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