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Old 09-21-2016, 06:12 PM   #1
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Oil change.

I am at auto parts and need to verify what oil is required for the Cummings coach motor. I don't have manual with me. Help!
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Old 09-21-2016, 06:13 PM   #2
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Can we run Synthetic?
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Old 09-21-2016, 06:46 PM   #3
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Quote:
Originally Posted by Englund View Post
I am at auto parts and need to verify what oil is required for the Cummings coach motor. I don't have manual with me. Help!
I was considering Shell Rotella T 15W-40 Heavy Duty Diesel Oil, I think you can get 5 Gal at Walmart for under $70.00. I'll go grab the book and see if there is a recommendation.
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Old 09-21-2016, 07:10 PM   #4
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The book says use API Service 15W-40 with a CES20081 rating, or a API rating of CJ-4/SL.

"Use of "synthetic engine oils" (those made with API group 3 or group 4 base stocks) is permitted, subject to performance and viscosity limitations of petroleum (mineral) based engine oils. The same oil change intervals that are applied to petroleum (mineral) based engine oils must be applied to synthetic oils." (ref: Owners Manual ISB6.7 CM2350 B101)

There is more info based on weather conditions that you may need to consider.

FYI Our Legacy is a 2014
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Old 09-21-2016, 07:35 PM   #5
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Oil Capacity?

Anyone know the engine oil capacity? I can't find it in the book.

Thanks.
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Old 09-21-2016, 09:40 PM   #6
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Three gallons (12 quarts). Rotella seems to be the recommended oil. They sell it at Walmart in one gallon containers, too.


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Old 09-21-2016, 09:45 PM   #7
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Ok thanks. I am Going with the Rotella type t. Synthetic
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Old 09-22-2016, 09:17 AM   #8
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Valvoline Royal Purple 15W-40 Oil is the recommend product for Cummins engines. The oil containers even have the Cummins logo on the front label. I can usually find this on sale between $10.60 TO $11.50 a gallon depending on which store has the oil on sale. It is also recommend that you change your oil filter at every oil change.


Please do not buy the cheap oil filters that the parts stores sell, buy the correct Fleetguard filters for your engine. Your engine will thank you in the long run. The Fleetguard filters are engineered for the Cummins engines. The filters provide the correct filter media, inlet/outlet hole pattern, Belleville spring washer and bypass to name a few items that will provide the proper oil filtration and circulation of the oil to your engine.
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Old 09-23-2016, 10:57 AM   #9
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I used 4.5 gallons when changing the oil and filter. I have run the engine and checked and rechecked. Is this the same amount everyone else is requiring?
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Old 09-23-2016, 11:17 AM   #10
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If the oil meets OEM specs... I would always pick the synthetic oil. Stay with reasonable intervals and enjoy a long and healthy engine life and improved economy. My only recommendation is to pick an oil and stay with it(others have different input).
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