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  #13  
Old 01-25-2014, 11:16 PM
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Re: Diesel reliability for short trips

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Originally Posted by ExcursionDiesel View Post
I don't think NAFTA CRDs show a regen message. Using my ODBII adapter and Torque App, I've witnessed my EGT and CAT temps run 1250*F for 20 minutes on a few occasions and never saw anything on the dash. I have 7400 miles so I'm sure it has occurred many times. I am guilty of idling for an hour while talking on the phone which is bad on the DPF. Fortunately, I also drive for hours at a time at 60+.
You are correct. We won't get an EVIC message for a normal regen. The EVIC only warns if the DPF is getting too "clogged".

OP, I would consider the gas V6 for ur purposes, unless of course, you don't mind putting in some freeway miles when you get the EVIC DPF message.

IMHO, the duty cycle you describe, may require you to put in some 20 minute highway driving periodically.
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  #14  
Old 01-25-2014, 11:34 PM
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Re: Diesel reliability for short trips

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Originally Posted by NC4stroker View Post
You are correct. We won't get an EVIC message for a normal regen. The EVIC only warns if the DPF is getting too "clogged".

OP, I would consider the gas V6 for ur purposes, unless of course, you don't mind putting in some freeway miles when you get the EVIC DPF message.

IMHO, the duty cycle you describe, may require you to put in some 20 minute highway driving periodically.
I disagree. Like I said, I drive over 90% of the time in the city and over the past 3 months of ownership I've never been prompted to do so.

If he's driving only 75% city why would he?
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Old 01-26-2014, 12:02 AM
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Re: Diesel reliability for short trips

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Originally Posted by thebc2 View Post
I disagree. Like I said, I drive over 90% of the time in the city and over the past 3 months of ownership I've never been prompted to do so.

If he's driving only 75% city why would he?
I'll echo this. My wife drives the wk2 with all city driving and no issues, 3500 miles in Vegas so far. All oil and def usage is exactly as it should be. I drive it once every week. I have the 3.6 in my rubicon and I VERY strongly advise against it. Damn thing sucks ass (I'm at 12.8 mpg right now).
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Old 01-26-2014, 12:53 AM
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Re: Diesel reliability for short trips

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Originally Posted by maw262 View Post

Most of my city driving consists of trips that are less than 5 miles and less than 15 min in length.

I only get on the highway once every 3-4 months
Arguably a tough duty cycle on any engine for many reasons. I just feel the diesel won't even get thoroughly warmed up. IF that driving duty cycle doesn't lead to more active regens, I don't know what would. Except for excessive idling.

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Originally Posted by thebc2 View Post
I disagree. Like I said, I drive over 90% of the time in the city and over the past 3 months of ownership I've never been prompted to do so.

If he's driving only 75% city why would he?
That's reassuring! And good news for the primary city drivers.

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Originally Posted by dugedug View Post
I'll echo this. My wife drives the wk2 with all city driving and no issues, 3500 miles in Vegas so far. All oil and def usage is exactly as it should be. I drive it once every week. I have the 3.6 in my rubicon and I VERY strongly advise against it. Damn thing sucks ass (I'm at 12.8 mpg right now).
I hope the DPF/emission equipment can withstand prolonged city life. That would be another great selling point for the diesel.

I agree my Pentastar in my other GC is slightly anemic, but combined I get about 18 MPG, and I'm not a conservative driver.

I hope you guys will let us know if you ever to get an EVIC message necessitating highway speeds to facilitate a regen.
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Old 01-26-2014, 01:33 AM
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Originally Posted by NC4stroker View Post

You mean you haven't had a DPF message from the EVIC?

I can promise you've had some regens. I've had several I know about in 3600 miles. You can tell as the MPGs drop while cruising, and you can smell it when you park, if the regen is in progress.
Never had a dpf message. It may be doing it but it's not telling me about it.
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Old 01-26-2014, 04:39 AM
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Re: Diesel reliability for short trips

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  #19  
Old 01-26-2014, 10:18 AM
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Re: Diesel reliability for short trips

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Originally Posted by MuSh View Post
Never had a dpf message. It may be doing it but it's not telling me about it.
I'll share my story with you! I'm a manual reader (the fun stuff, not about the "this is how you roll down the windows" stuff!), and with my 2012 Ram Cummins, I was all into the mechanics and workings of the DPF system. (Until I stripped all that crap off my truck!!!!!)

Anyway, the manual, and the diesel supplement- which surprisingly reads virtually the same between our 3.0 CRD, and my 6.7 Cummins- will lead you to believe you'll get a notice of all "active" regens. BUT, and believe me the Cummins Forum people corrected me, you only receive EVIC notifications when the DPF is getting full and your normal driving habits are not allowing the system to clean itself- actively or passively.

I was assuming if you drive far enough, long enough, say on the interstate at highway speeds, your vehicle would NEVER need active regen, because all the high speed driving would always allow for PASSIVE regen. BUT, again, this is simply NOT the case. For example, even high-speed highway driving, does not always allow the EGTs (exhaust gas temps) to get high enough to allow passive regen.

I contacted Cummins directly, and they could not even answer my questions regarding active vs passive regen vs highway driving, and they said I'd need to contact Ram!

So, in summation, if you own a diesel with a DPF/emission equipment, you'll have active regens without any EVIC notification. BUT, you may also get an EVIC message letting you know you are going through an active regen, depending on the status of the DPF.
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Old 01-26-2014, 06:07 PM
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Re: Diesel reliability for short trips

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Originally Posted by dugedug View Post
I'll echo this. My wife drives the wk2 with all city driving and no issues, 3500 miles in Vegas so far. All oil and def usage is exactly as it should be. I drive it once every week. I have the 3.6 in my rubicon and I VERY strongly advise against it. Damn thing sucks ass (I'm at 12.8 mpg right now).
I've got the 3.6 in my Summit - I'm averaging 22+ mpg at 2,900 miles with about half of those city miles - I freakin' love it - plenty of power and smooth as silk.
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Old 01-26-2014, 06:54 PM
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Re: Diesel reliability for short trips

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Originally Posted by Buckaroo View Post
I've got the 3.6 in my Summit - I'm averaging 22+ mpg at 2,900 miles with about half of those city miles - I freakin' love it - plenty of power and smooth as silk.
At your claimed average of 22+mpg in 50% city (which is closer to the EPA hwy rating of 24mpg), my CRD Summit is getting ~20% better fuel economy (using city driving numbers) with only a 15% increase in fuel costs vs a gasser with none of the drawbacks of the anemic 3.6.

The 3.6 is adequate for flatland parking lot to parking lot operations. For any driving that has an incline, a headwind, highway speed traffic, or non-optimal surface I would look elsewhere.

My LR3's Jag V-8 was smooth, the 3.6 in my JKUR is like 6 drunk hamsters banging on bongos.
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Old 01-26-2014, 07:43 PM
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Re: Diesel reliability for short trips

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Originally Posted by dugedug View Post

The 3.6 is adequate for flatland parking lot to parking lot operations. For any driving that has an incline, a headwind, highway speed traffic, or non-optimal surface I would look elsewhere.
Lol, I do agree the Pentastar is anemic at times. But even after banging around in my 700 HP Shelby, my 2wd Pentastar is still very smooth and feels great on the road!
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Old 01-26-2014, 08:32 PM
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Re: Diesel reliability for short trips

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Originally Posted by dugedug View Post
At your claimed average of 22+mpg in 50% city (which is closer to the EPA hwy rating of 24mpg), my CRD Summit is getting ~20% better fuel economy (using city driving numbers) with only a 15% increase in fuel costs vs a gasser with none of the drawbacks of the anemic 3.6.

The 3.6 is adequate for flatland parking lot to parking lot operations. For any driving that has an incline, a headwind, highway speed traffic, or non-optimal surface I would look elsewhere.

My LR3's Jag V-8 was smooth, the 3.6 in my JKUR is like 6 drunk hamsters banging on bongos.
I'm not comparing it to your car or knocking the Ecodiesel so just relax.

The previous poster said he was getting 12 MPG from the Pentastar and it sucked.

I was giving my experiences with my V6 Summit. I'm very happy with it.

EDIT: I see you're the poster who was knocking the Pentastar - sorry you don't like it - but to claim it's anemic and "it sucks" is laughable. It's a fine engine.
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Old 01-27-2014, 03:21 PM
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Re: Diesel reliability for short trips

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Originally Posted by Buckaroo View Post
...

EDIT: I see you're the poster who was knocking the Pentastar - sorry you don't like it - but to claim it's anemic and "it sucks" is laughable. It's a fine engine.
Compared to what? The 3.8 and 4.0, umm ok.
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