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Old 01-12-2014, 01:27 PM   #1
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Cat vs Cummins

1998 Tradewinds By National has a 300hp Cat Engine On a Freightliner Chassis. I do not know anything about the cat engine. How do the compare to the cummins ?
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Old 01-12-2014, 01:46 PM   #2
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Six of one, half a dozen of the other.
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Old 01-12-2014, 01:48 PM   #3
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Cat and Cummins are both good engines. This type of question will always bring up a Ford vs Chevy debate.

Early diesels had a lot of Cats, but slowly got overtaken by Cummins. A couple of years ago, Cat made the decision to get out of RVing all together. Cummins is now the primary RV motor with Mercedes and Navistar taking a short stab at the RV market, but to no avail.

If I were buying an older RV, I would choose the coach with the larger engine, be it a Cat or a Cummins.
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Old 01-12-2014, 01:55 PM   #4
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Don't be influenced by people who say things like "it might be harder to get service because CAT isn't in the RV business anymore." There are many thousands of CAT engines in service in on-highway trucks and plenty of service centers for them. IMHO it's irrelevant if RV dealers have the skills to service a CAT engine because I prefer to have my engine/transmission serviced at an authorized CAT service center rather than at an RV dealer.
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Old 01-12-2014, 02:01 PM   #5
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I have had both and worked on both, also Detroit but didn't ask about them.

I would look more closely at the chassis, house construction, floorplan and then the engine. Parts availability for either one isn't much of an issue in most major cities. When dealing with small out of the way towns neither one are easy to get parts for. This is why Preventive Maintenance IS key. Keep the rig in road ready state at all times and you won't have to worry as much when traveling.

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Old 01-12-2014, 02:06 PM   #6
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As to post#3, Cummins is owned by Mercedes, as is Onan, and Freightliner.
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Old 01-12-2014, 02:32 PM   #7
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I have a 1999 tradewinds with a Cat 3126B engine I also have a vehicle with a cummins and as stated either engine is a good engine IF they have been serviced
and not just ran.
Parts for a Cat engine cost more as a rule but seldom will that be a issue.
The mpg on this unit will be 9 to 10 if you keep your speed 60 or less.
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Old 01-12-2014, 04:01 PM   #8
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Quote:
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As to post#3, Cummins is owned by Mercedes, as is Onan, and Freightliner.
I don't believe that. Cummins seems to be an independent company for all the information on there stock.
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Old 01-12-2014, 04:05 PM   #9
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Quote:
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I don't believe that. Cummins seems to be an independent company for all the information on there stock.
Cummins/Onan is not owned by Mercedes but it is correct that Freightliner is.
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Old 01-12-2014, 06:52 PM   #10
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Quote:
Originally Posted by macandphyl View Post
As to post#3, Cummins is owned by Mercedes, as is Onan, and Freightliner.
Detroit Diesel was purchased by Daimler Benz, aka Mercedes. Before that it was owned by Penske. Before that it was owned by GM.

Cummins bought Onan.

I've worked for both Detroit Diesel and Cummins.

I don't know about Freightliner.
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Old 01-12-2014, 07:01 PM   #11
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Cummins is an independent, shareholder-owned company listed on the NYSE as CMI.

Rusty
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Old 01-12-2014, 07:19 PM   #12
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i have no experience with cat, but i heard the maintenance costs for cummins are cheaper than that for cat. that was the reason at the time i was looking for a cc with cummins engine only. i could have been wrong
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Old 01-12-2014, 10:04 PM   #13
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I had a 3126B in a '99 Tradewinds and it would get 12MPG no problem. It would accelerate going up the Grapevine from 45MPH. It ran great but it was more expensive to maintain than my Cummins.
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Old 01-12-2014, 10:14 PM   #14
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I worked at the Freightliner HQ as a contractor in the IT dept. setting up their SAN and managing an Oracle Financials team. They were owned by Daimler Benz then and that was around 2001 and 2002.
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