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Old 06-19-2016, 09:12 AM   #15
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Isuzusweet's points are correct, and I want to add a quick reinforcement. If you are paying $600+ for someone to do an oil change, consider doing it yourself, or going to a different shop.

My cummins diesel pusher uses 12qts of oil and a $10 filter. I buy 6 gallons (24qts) from Sams every six months for $80. I change the filter every other oil change, and the oil every 3k miles. So it costs me $45 per oil change.
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Old 06-19-2016, 05:48 PM   #16
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I have driven diesel cars and trucks for years so I may be biased, however this is posted in the classic moho section so I assume we are talking about older vehicles. Also there are more gas mohos then diesels. With that being said look at the number of threads discussing problems and or repairs on 454s compared to those on diesels. Also look at the mohos for sale with new or rebuilt gas engines compared to diesels. I think I stay with my old oil burners.
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Old 06-19-2016, 06:08 PM   #17
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There is a real good article I relayed to my dad recently regarding your question AND a comparison of Class A to 5th wheel and Travel Trailer: a family's experience. According to the article, it is more than a matter of fuel. The industry separates the two by quality and features as well. Gas units ride on springs while Diesel units ride on air- smoother. Ironically they come out averaging about the same mpg! Diesel maintenance is more expensive as does the servicing. Diesels have a longer life span and more power to tow a toad. The UREA or DEF thing is a bad expense on a diesel average 2.5 gallons per 5000 miles @$7.50/gal. I would buy a pre 2011 diesel!
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Old 06-19-2016, 09:38 PM   #18
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diesel vs gas

Most of my professional wrenching has been on aircraft. Piston and turbine. I have to say that the Diesel engines I've worked on are built more like aircraft engines than most gas engines. From the hose clamps to injector pumps. They are definitely build to run longer with more reliability. I actually like working on them more than gas engines. They are built like they are meant to be maintained instead of thrown out.

I took my 2008 diesel Ram in for service. Oil, filter, fuel filter, both differentials flushed and filled, transmission flushed, pan dropped, new filter, filled, grease job and alignment for under $500

I haven't found parts to be all that expensive. $180 for a turbo cartridge for the 5.9l Cummins vs $3200 for my Audi.
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Old 06-20-2016, 01:49 AM   #19
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I would rather be stuck in the middle of nowhere needing an alternator for my 454 than an alternator for an Isuzu diesel.....
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Old 06-20-2016, 04:13 AM   #20
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There is a lot of opinions on here but at the end of the day diesel is better. Im a mechanic and I wouldn't own a gasser. The myth that a diesel is more expensive to maintain is garbage. Yes they require more oil, but they can go longer intervals between changes and theres no spark plugs to maintain. Theres a reason the pro use diesel.
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Old 06-20-2016, 05:47 AM   #21
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I would rather be stuck in the middle of nowhere needing an alternator for my 454 than an alternator for an Isuzu diesel.....
Very true and this is why I asked the OP for a closer spec on what model of moho they were looking for, as parts supply and availability do come into play. Now if she were to buy Wxbuoy's 350 with the 6BT Cummins, getting an alternator wouldn't be a problem, would it?

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Old 06-20-2016, 06:31 AM   #22
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And thats why I carry a spare alternator for my Isuzu.......and it was only $150, new take off.

Im a diesel dummie and kinda fell into the purchase of my 310TD. I was completely unfamiliar with diesel motors. Now after 3+ years of ownership and 7000+ miles, I wouldnt buy a class A without a diesel. Most of my fears about the diesel were due to lack of knowledge. They are just tougher, heavier duty, made to last motors. As far as on going costs are concerned, I dont think I could afford owning a gas powered class A. Not with the endless maintenance, mods, and expected engine replacement at 50-70k.

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Old 06-20-2016, 08:14 AM   #23
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There is a lot of opinions on here but at the end of the day diesel is better. Im a mechanic and I wouldn't own a gasser. The myth that a diesel is more expensive to maintain is garbage. Yes they require more oil, but they can go longer intervals between changes and theres no spark plugs to maintain. Theres a reason the pro use diesel.


Hi, how long can your diesel go between oil changes? My Lincoln goes 5,000 miles, My F-150 goes 10,000 miles, and my BMW goes 15,000 miles between oil changes.
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Old 06-20-2016, 08:36 AM   #24
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My advice to the OP.....get the coach configuration you want (size, layout etc) and then worry about what engine it is. You will be more unhappy with not having the functionality you want (constantly in your face) than what type of motivation it has.

Unfortunately some coaches configurations were only built with specific chassis/power trains, and 'you get, what you get'.
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Old 06-20-2016, 09:01 AM   #25
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Now that I've owned a diesel, whether I'm pulling or driving an RV, I believe I'll always own a diesel. The new diesels (since 2013 with DEF) get much better fuel mileage, are a lot quieter, and don't produce the black smoke like the older diesels. The power and torque they produce, far exceed most gas burners. The oil changes and maintenance cost more, but are not required as often as gas burners. And, diesel fuel is now more comparable to gas in price. For me, having a Cummings 6.7 turbo diesel, and the piece of mind to simply put the truck in tow mode and set the cruise is priceless. No worries about steep grades or stopping the rig when going downhill due to jakebrakes or engine compression braking. So many of my friends are trying to pull heavy oversized RVs with gas burners. Yes, they will roll it on flat land, but wait until you need the power to go up or the braking to come down the mountains... My mpg only drops about 5 mpgs when towing my AS. With most gas burners, the mpgs are significantly lower when driving/towing. Just my thoughts...
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Old 06-20-2016, 09:52 AM   #26
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A lot of good information here except the comments about how much more a diesel is to maintain. One advantage that hasn't been mentioned except as a nod to reliability is diesels are less likely to overheat.
When I started as a firefighter in 1971, all our engines were gas powered. In CA, fire equipment can be required to travel several hundred miles to get to the scene of a major wildland fire, usually doing the high temperatures of summer. Gas powered engines often overheated, especially pulling long grades and sustained pumping operations. We often sent a mechanic along with the strike team (five engines and a chief officer) just so the equipment could make it to the scene. The diesels did not and were not affected by the heat. We switched the entire fleet to diesels and the mechanics stayed home. I don't think any fire department in CA orders anything but diesels.
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Old 06-21-2016, 05:56 AM   #27
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Quote:
Originally Posted by ROBERTSUNRUS View Post
Hi, how long can your diesel go between oil changes? My Lincoln goes 5,000 miles, My F-150 goes 10,000 miles, and my BMW goes 15,000 miles between oil changes.
I don't doubt it. My 2012 Honda would go 10,000+ miles too before the maintenance minder says to change the oil; but I'm a lot smarter than the dumb engineer that succumbed to the even dumber marketing guys request for 10,000+ mile oil changes to reward the owner that trades their car in every two to three years. I change mine at under 5,000 miles or 7,500 kms as fluids are cheap, engine replacements are not.

I would never go further than 8,000 miles before changing oil; on any car.

I wonder in that 15,000 miles, how often you check the oil?

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Old 06-21-2016, 12:58 PM   #28
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Quote:
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Hi, how long can your diesel go between oil changes? My Lincoln goes 5,000 miles, My F-150 goes 10,000 miles, and my BMW goes 15,000 miles between oil changes.
Is your bmw an rv? Your statement isnt relative to the question.
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