Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help




Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 01-24-2006, 07:32 PM
ncof300d
Guest
 
Posts: n/a
Fuel Econony - 1999 E300D

Today was the first true "highway" usage of my E300 to check the fuel economy. I made a round trip between Bryan, OH and South Bend, IN. on the Ohio and Indiana turnpikes. There was about 45 of 247.1 miles that was combined "city" and two lane state routes. I filled up this afternoon and calculated 29.1mpg. This this common? I was hoping that it might achieve closer to 32/33.
Thanks,
Reply With Quote
  #2  
Old 01-24-2006, 07:37 PM
Hatterasguy's Avatar
Zero
 
Join Date: Nov 2002
Location: Milford, CT
Posts: 19,267
Sound about right. Your sig says you are running B100 that will cost you a few mpg's.

You need to average over a few trips low 30's seems about right on these cars for easy highway work.
__________________
2017 Chevy Silverado 1500 LTZ
Mercedes??

"No free man shall ever be debarred the use of arms. The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government."
-Thomas Jefferson
Reply With Quote
  #3  
Old 01-24-2006, 08:18 PM
Registered User
 
Join Date: Dec 2005
Location: San Diego
Posts: 118
I would have to drop freeway speed below 70mph to get 32-33 mpg. Most people are over optimistic in regards to fuel economy, yours seems about right considering everything. If you want to approach 35 mpg I suspect you would have to set the cruise at 60 mph and just crawl along the freeway, which is a bit dangerous in a lot of places.
Best Regards,
Paul
__________
98 E300
Reply With Quote
  #4  
Old 01-24-2006, 08:20 PM
ncof300d
Guest
 
Posts: n/a
As far as the B100 I have not used any since late October because of the temperatures in the northwest corner of Ohio. I miss using it. I hope to start back in April.

The trip today was with a fellow engineer. All of the company vans were signed out so we took Emily to South Bend. I let my co-worker drive back....it damaged his GM only thinking. All he talk about was the car.
Reply With Quote
  #5  
Old 01-24-2006, 10:04 PM
raMBow's Avatar
Registered User
 
Join Date: Mar 2005
Location: Missouri
Posts: 505
Winterized diesel would also account for some of this. Half tank is not the most accurate either. I have not checked mine lately, but it seems like it is averaging just under 30, mixed city, rural and some longer runs at 65 - 70 mph.

Is all the general maintenance good? Synthetic oil, tranny fluid, rear diff, tire pressures (mine are about 40psi), filters (air, gas - pre & main), would like to think with the miles you have you should not have problems with wheel bearings, yet.

Oh, in weather like this do you have the A/C off? Basically it is always on unless it is in Economy mode, that would account for a couple mpg there.
__________________
raMBow

1999 E300DT Obsydian Black Metallic, Heated Full Leather Parchment options, E2, K2, 136,000+, best 36.5 mpg - GP's 12-04 & 11-12 Zero Stuck
2010 Honda Odyssey - The BrideMobile - best 26.5
(2) 2005 Honday Accord- (1 -Corporate 1 - Personal) - 110,000 4-cyl 30mpg
2000 VW Golf GLS TDI, Upsolute Chip (sold to Brother, now 300+k on it) 48.5 mpg like clock work
1987 Honda CRX HF - Sold 87,000 always over 50 mpg Max 67 mpg
Reply With Quote
  #6  
Old 01-24-2006, 10:10 PM
Diesel Giant's Avatar
Registered User
 
Join Date: Oct 2004
Location: Loganville/Atlanta
Posts: 2,156
Yes the winter diesel mix has a few less BTY's than the summer mix. You have less power from each gallon, hence the MPG's will drop slightly. Adding some cetane booster may extract a little more power out due to the better burn characteristics, but they may not really be noticed.
__________________
1981 300D 147k
1998 VW Jetta Tdi 320k
2001 Dodge Ram 2500 141k
1979 300D 234k (sold)
1984 300D "Astor" 262k(sold)
Mercedes How-To and Repair Pictorials
I love the smell of diesel smoke in my hair
Reply With Quote
  #7  
Old 01-25-2006, 03:58 PM
raMBow's Avatar
Registered User
 
Join Date: Mar 2005
Location: Missouri
Posts: 505
Over lunch I checked the mileage on mine. This is nearly 2 months of winter driving, complete mix of driving from short trips, idling, medium trips at 65mph and longer trip at 75 mph.

937 miles on 32.8 gallons = about 28.6 mpg
__________________
raMBow

1999 E300DT Obsydian Black Metallic, Heated Full Leather Parchment options, E2, K2, 136,000+, best 36.5 mpg - GP's 12-04 & 11-12 Zero Stuck
2010 Honda Odyssey - The BrideMobile - best 26.5
(2) 2005 Honday Accord- (1 -Corporate 1 - Personal) - 110,000 4-cyl 30mpg
2000 VW Golf GLS TDI, Upsolute Chip (sold to Brother, now 300+k on it) 48.5 mpg like clock work
1987 Honda CRX HF - Sold 87,000 always over 50 mpg Max 67 mpg
Reply With Quote
  #8  
Old 01-25-2006, 04:01 PM
Registered User
 
Join Date: Oct 2005
Posts: 4,263
I consistently get over 30 (and usually over 31) overall MPG with my NA '96, but we're still on #2-d here. Overall for me is about 90-95% highway, usually at about 75 mph.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 03:33 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page