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#16
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45 minutes, I admit it's long. But especially on diesels which have high compression ratios and are heavier/harder to rotate - every 10-15 minute errand you complete while idling the car is one less crank on the starter.
Any given starter has a finite number of cranks in it. Whether that number is 10 million, 1 million, 1 thousand... who knows. Every one will be different... but nonetheless, every unnecessary crank is increasing the counter. |
#17
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used to leave their trucks idling for long periods of time.
Detroit Diesel recommends against it Caterpillar recommends against it Cummins recommends against it Mercedes-Benz recommends against it. So unless the driver is not paying for the fuel nor the maintenance, he will probably shut down.
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Gone to the dark side - Jeff |
#18
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His profile has this in it
Interests: destroying cars, and rebuilding them. Occupation: diesel engine mechanic |
#19
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When I do a diesel purge my near-half gallon bottle empties in about 15 minutes. You can really see the usage at idle when doing a purge. More than you would think....... {and that is with the return going into the same bottle of course}
We certainly wouldn't want to just responsibly drive them like so many people have been doing since the 70's. We want to trick things up and feel like we are accomplishing something that is just a little smarter than the average guy. I'm just sayin'..........
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Jimmy L. '05 Acura TL 6MT 2001 ML430 My Spare Gone: '95 E300 188K "Batmobile" Texas Unfriendly Black '85 300TD 235K "The Wagon" Texas Friendly White '80 240D 154K "China" Scar engine installed '81 300TD 240K "Smash" '80 240D 230K "The Squash" '81 240D 293K"Scar" Rear ended harder than Elton John |
#20
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What does he care, he is burning $3.25 Gasoline in it.
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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver 1982 300SD - 232K miles - Wife's Daily Driver 1986 560SL - Wife's red speed machine |
#21
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Why would you let your car idle for 45 minutes? Your wasting a ton of fuel and sooting up the engine. Now that its warmer out just start it up and go. You have a NA diesel so you don't need to do anything special. On a turbo charged engine its a good idea to stay off the boost until it warms up a bit. Their also is no reason that you need to let it idle down. You only need to do that on turbo charged engines if you just came off boost, you have to give the turbo a chance to slow down. On a NA engine this is pointless.
Running gas is probably a very bad idea, these are diesels after all.... Diesel cost $4.25+ a gallon up here, I was pissed off that I had to idle the SDL for 20 minutes today after I changed the coolant.
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1999 SL500 1969 280SE 2023 Ram 1500 2007 Tiara 3200 |
#22
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1) As has been stated about 100 times already, 45 minutes of idle is unnecessary, pointless, a waste of fuel, and just needless wear-and-tear on the engine. Idling is not good for any car for an extended period of time.
2) Gasoline is really terrible stuff for your diesel engine. If you need a "thinner", use kerosene. 3) Why would you add new motor oil? It has a bunch of additives that are designed to PREVENT it from burning. All that said, sparks (despite meaning that you are destroying your engine) probably looked pretty cool.
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'79 300SD '82 Chevy Chevette diesel |
#23
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Quote:
And letting our engines idle for a bit is not going to hurt. If you have a working t'stat, it'll come up to temp, and stay there, regardless of whether or not you're moving, so once it hits 80c, or whatever temp your car runs at, you are wasting fuel, albeit, not much, according to some.
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83 SD 84 CD |
#24
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Not always. Around here when the engine temp comes up, and it's zero out, the heater pulls enough heat from the engine to keep it below proper operating temps at idle.
Besides that, it isn't the coolant temp that is important, it's the cylinder temps that stay on the cool side and can foul the rings.
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Gone to the dark side - Jeff |
#25
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Quote:
If someone wonted to add a quart to a full tank of diesel to lube things up some. Or would that bring your mpg down adding used oil to diesel fuel. Just wondering Not talking about synthetic oil. |
#26
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Quote:
If you really want to destroy it and put it into it's grave, keep driving it this way! |
#27
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Poor Cervan.....he's as misunderstood as Trucky. I for one, like him.
I wouldn't do it to my car - but by golly, it's a free country. I won't point out the hypocrisy in his railing against WVO users though. Ooops, or did I?
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1981 240d - 135k - Arlene |
#28
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Quote:
I've had that on VW diesels. I once bought an old neglected jetta diesel that had a bad stumble and smoked badly. The PO said he "always kept the revs below 2500 because diesel rev low". I figured it just needed some diesel purge and a hard run. Out on the highway, at night. Both fuel lines in a 2l pop bottle filled with diesel purge. I took an uphhill onramp onto the highway, and wrung it out to 4500 rpms under load. Halfway up the hill, I could see little sparks. By the time I got to the top, there were embers floating around behind me. Over years, the soot just builds up in the exhaust. If it never gets a hot run, it just stays there. If someone gives it an "italian tuneup", the EGT will spike enough to light up the soot just like a chimney fire. FWIW, I bet idling for 45+ minutes could leave a fair bit of soot in the exhaust.
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Jake 1999 e300d PlantDrive WVO/SVO conversion **note to self: oil changed at 268k kms** 1990 Toyota 4Runner FrankenDiesel swap |
#29
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Some of the reason older rigs idled was to run auxillary equipment, ie refrigeration. I am sure there are other reasons and cost of diesel and pollution are probably other reasons. I think most of the refrigeration trailer now have a smaller egnine to run the A/C on them.
Tom |
#30
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Your IP does not need extra lubrication.
That said if you really have the urge to waste money use 2 stroke oil. Also. the sparks were almost certainly from the gasoline. He routinely over rev's the engine for no apparent reason.
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1984 300SD Turbo Diesel 150,000 miles OBK member #23 (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination |
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