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  #1  
Old 04-04-2007, 03:42 PM
SwampYankee's Avatar
New England Hick
 
Join Date: Sep 2006
Location: CT
Posts: 1,501
IDEALLY, how long should a diesel be run per use?

My commute to work is exactly 37 seconds, unless I have to wait for a car. If I back in my driveway I can shave about 6 seconds off. I need to have a car for various things during the day.

I know short runs aren't good for any car, gas or diesel. For any of my gassers I never own any of them long enough to see any of the damage done.

But I love driving my TD and do daily. I warm it up in the morning for about 5 minutes before I leave and then drive around the block to work to stretch it our to another 5 minutes or so. The last diesel I owned was when I had a 30 mile commute so I never thought much about it.

Since I want to keep this car for a long time, is my current routine of 5 min. warming and 5 min. sufficient for the long term health of the engine or should I leave the house earlier and stretch the driving out to 15 or 20 minutes? Like go grab a coffee on my way in or something.
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1980 300TD-China Blue/Blue MBTex-2nd Owner, 107K (Alt Blau) OBK #15
'06 Chevy Tahoe Z71 (for the wife & 4 kids, current mule) '03 Honda Odyssey (son #1's ride, reluctantly) '99 GMC Suburban (255K+ miles, semi-retired mule) 21' SeaRay Seville (summer escape pod)
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  #2  
Old 04-04-2007, 03:48 PM
rrgrassi's Avatar
mmmmmm Diesel...
 
Join Date: Jun 2006
Location: Royse City Tx
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If you take it on a good 50-100 mile run on the highway during the weekend, you should be good. I drive 20 miles a day one week then 100 miles a day the next week.
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06 VW Jetta TDI 210K miles

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RIP--Lost in fire...82 300D 322K was My Daily Driver-On the search for a w126 now...

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  #3  
Old 04-04-2007, 03:54 PM
bgkast's Avatar
Rollin' on 16s
 
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Your commute is 37 seconds and you drive?


I feel bad when ever I drive mine and it does not reach operating temperature. I take the "disposable" ford for shorter trips.
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  #4  
Old 04-04-2007, 03:59 PM
LaughingGravy's Avatar
Mmm.... Diesel.
 
Join Date: Oct 2003
Location: N. NJ
Posts: 434
My commute is 8 minutes, but the long road has no sidewalk or shoulder and way too dangerous for a bicycle or scooter. Speed limit's 50, but if you're below that, the folks with long commuting times are right up on your butt.

I try to save starting the 300TD unless I have at least one other place to go.
Even dropping off the kids at school is fine because it allows for some engine idle time.

I use the motorcycle whenever I can.
It allows me to create a nice distance away from insane commuters due to size and acceleration.
I'm aggressively cautious, with extra bright lights on the bike.
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  #5  
Old 04-04-2007, 04:03 PM
LaughingGravy's Avatar
Mmm.... Diesel.
 
Join Date: Oct 2003
Location: N. NJ
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Quote:
Originally Posted by SwampYankee View Post
Like go grab a coffee on my way in or something.
Just be aware of any idling laws that may be enforced.
People won't say boo about a gasser idling while you get coffee, but a diesel just makes enough noise that it gives people a reason to complain.

Then again, CT doesn't have a helmet law for motorcycles
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  #6  
Old 04-04-2007, 04:05 PM
SwampYankee's Avatar
New England Hick
 
Join Date: Sep 2006
Location: CT
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Quote:
Originally Posted by bgkast View Post
Your commute is 37 seconds and you drive?


I feel bad when ever I drive mine and it does not reach operating temperature. I take the "disposable" ford for shorter trips.
Yeah, drop off and pick up the kids at school, daily bank deposit, post office a couple times a day depending on how much we have going out, etc. Little stuff like that. Plus I'm a lazy SOB.

Like I said, I love driving it. But if I'm better off leaving it at home and driving my Jeep instead I'll do it and save the TD for the weekend. Is operating temperature good enough or should I run it some more in the morning?
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1980 300TD-China Blue/Blue MBTex-2nd Owner, 107K (Alt Blau) OBK #15
'06 Chevy Tahoe Z71 (for the wife & 4 kids, current mule) '03 Honda Odyssey (son #1's ride, reluctantly) '99 GMC Suburban (255K+ miles, semi-retired mule) 21' SeaRay Seville (summer escape pod)
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  #7  
Old 04-04-2007, 04:39 PM
mrhills0146
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There is no reason to "warm it up." A 617 hardly heats itself up at all at idle.

As long as you run it out once a week or once every couple of weeks you'll be all right. And if you're driving that little, go by time rather than mileage for oil changes.
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  #8  
Old 04-04-2007, 04:53 PM
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Posts: 360
I would reccomend one minute of idle before driving the car in almost any weather. These diesels are fairly effecient and don't create alot of waste heat at idle, so it will take a long time to come to operating temperature. I believe twenty minutes or so (cruising speed) at operating temp is required to remove any condensation from the oil. That figure could be pure fiction, but you should let it run on the highway as much as possible. Personally, I think any amount of city driving is horrible for the car, but in the end it's just a tool of transportation, so use it as you must.

How long are the trips you make during the day? All city driving? Maybe use the diesel in the spring, summer and fall, and use the ford for poor weather and winter driving.
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  #9  
Old 04-04-2007, 05:17 PM
winmutt's Avatar
85 300D 4spd+tow+h4
 
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37 seconds you have no excuse to drive a car.
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  #10  
Old 04-04-2007, 05:21 PM
patbob's Avatar
Its a Whatsit
 
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Location: Portland, OR
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Quote:
Originally Posted by SwampYankee View Post
My commute to work is exactly 37 seconds, unless I have to wait for a car. If I back in my driveway I can shave about 6 seconds off.
37 seconds? If you're physically capable of walking to work, do that instead. Walk back to get the car when you need it for your errand. You'll save significant wear and tear on the engine, save the $3/gal diesel, spend less time commuting and get a little exercise as well.
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  #11  
Old 04-04-2007, 05:24 PM
Phil's Avatar
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Location: Sonoma County, California
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Your commute is 23 seconds shorter than mine. I wouldn't drive except that I need to take about 120 pounds of stuff back and forth from home to work. I commute in a old Saturn so I can save the Mercedes.
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  #12  
Old 04-04-2007, 05:55 PM
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Rollin' on 16s
 
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Location: Vancouver WA
Posts: 6,528
Where the heck are you guys commuting to?
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  #13  
Old 04-04-2007, 06:02 PM
truckinik's Avatar
And I only had one lesson
 
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Location: Clearwater Beach, Florida
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Well, I got a long drive to work every day, and my diesel does a lot of running. Actually the work, is the drive, or the drive is the work, or whatever...

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  #14  
Old 04-04-2007, 06:04 PM
rrgrassi's Avatar
mmmmmm Diesel...
 
Join Date: Jun 2006
Location: Royse City Tx
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MPG is not good, but for the ton-mile it is.
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70's SPM #5608 Fairmont A-4 MOW car

06 VW Jetta TDI 210K miles

03 VW Golf TDI 5 speed 372K Miles

RIP--Lost in fire...82 300D 322K was My Daily Driver-On the search for a w126 now...

90 Dodge D250 5.9 Cummins/5 speed. 350K
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  #15  
Old 04-04-2007, 06:06 PM
300SD81's Avatar
1981 Mercedes-Benz 300SD
 
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Location: University of Georgia
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Wow, and I felt bad about my 4 minute drive to school... (thats 4 minutes at approx 80mph though, 10 minutes if i do the limit)
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