http://ecomodder.com/forum/EM-hypermiling-driving-tips-ecodriving.php

These ARE the technique. Note #1,2,4,8.

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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.

No holy grail with these cars unfortunatly. Suttle improvements can be cumulative. Certain things may also give overlap effects.

For example running thirty pounds fuel pressure with good boost and no alda effect. Just might be better than running no alda with normal fuel pressure.

If a thinner synthetic oil can offer the same protection as a much thicker dino oil. Depending on the gear clearances to the case for example could mean a sizable reduction in oil drag. I would not suspect the bulk of improvement to be just in reduced friction between gear meshes. Although somewhat less oil pumping efect just might be present. Or the energy to displace the lubricant reduced.

I bet if you took two identical cars with rear differentials. Or even transaxle front wheel drive cars. Put standard dino lube in one and synthetic in another. Drove them together for 100 miles. Used a temperature reader to see if the one was colder than the other.

Once you had the temperature differance. You might be able to calaculate the energy expended to create it. Energy is never lost remember just converted. Not attempting to be scientific here but if the elevated temperature one is considered it is consuming or waisting more energy.

Have to disagree about the weight comment. Only about 4-5% of the weight moved in a vehicle is the driver. The remainder is the car. If you can shed 1,000 pounds, you would need way less HP and way less fuel to move that weight. You are right in the sense that some guys shed a few pounds here or there expecting a miracle, but once you hit 100 pounds, you are saving fuel. Not sure how much, but some. Aerodynamics is one of the major factors also. The W123 is not so aerodynamice from the standpoint of today's cars.

Decent solution. Had not ocured to me until you mentioned it. Yet always saw them on hot rods in the old days.

I don't disagree with you greazzer. Just that that the differences for 100 pounds in a two ton vehicle don't mean much rolling down a road. Not the same as drag racing where weight is a big disadvantage.

I do know that my injectors once rebuilt, are going to produce the finest and most balanced mist of diesel that I should get better mpg!

I have been a member of ecomdder for some time. Have been dissed for getting 30 mpg there.

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85 Merc 300D - Unwinding 31 years of wear
86 VW TD
Mahindra Diesel
Iseki Diesel

In 2007 I didn't own a diesel.

I do not expect there are so many scientists around. I am no scientist but an engineer.

There is no such thing as identical cars, no such things as driving identical 100 miles, no such things as identical environment. The population of 2 is simply not big enough to draw any conclusion. The difference in mpg between Dino and Synthetic would be < 0.01 mpg, if at all. As I have said, share your findings and we can all save a few pennies. Enough said from me.

__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.

The cumulative effect of many .001 mpg improvements add up...

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Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

Ran some long-distance errands yesterday. Checked another half tank - 311 miles driven at 1/2 tank indicated - Filled it right to the top of the neck (always) with 9.662 gallons - 32.18795 mpg.

Best the car has ever delivered!!!!!

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Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

Of course there are no identical situations exactly or even close to it in that senario. The basic test would perhaps be better done with the same car using two different lubicant product tests . I am not argumentative by nature. Tend to leave that to the opposite sex.

That there is an actual differance is being illustrated by many current manufactures in there attempt to get the best possible picture of fuel milage by swinging to synthetic lubricants.

Actually less effort can be expended to earn more money to offsett higher fuel consumption in general. These things are just kind of a general interest to members.

My own interest was stimulated by a repeatable effect. All the older non tdi 1.6 litre turbocharged volkswagon Diesels I had at one time. Developed much better fuel milage on really hot days. This I noticed on several examples we owned.

I really felt with the less oxygen available by volume it should not be happening but it was. For the volume of air flowing into the engine there was no practical or easy way to scavenge enough of the created waste heat I thought to make a major differance.

So I did not pursue it. Now I wonder and have off and on with a little more effort applied something might have been improved. This effect never is reported on the mercedes older indirect injection engines by the way.

So they are not of interest in this area. Yet they basically are a very simular design in many ways. Why this differeance occurs between the two engines is what still interests me. Plus why it occurs at all on the older volkswagon engine. I did assume that hotter intake air was probably improving combustion.

Good condition 1.6 turbo diesel volkswagon. Fifty miles per imperial gallon on average summer days on long trips.. Improvement in fuel milage was really noticeable on really very hot days on long trips. Could have been hotter thinner base oil I suppose but as supplied their coolant cooling system was overkill. Plus there was a coolant fed oil cooler in the system.

Much of the design of the car was ruined after 1986 in comparison to what it had been in my opinion. Another killer of serious investigation was that fuel was so cheap back then. You did not even really consider the cost of it. If I had chance to pick up one of these again in a very low milage example in great condition I would jump at it for my local commuting.

This was the only car that I ever found the heater could actually burn you if you left your hand near the vents.Plus heat was developed very quickly as only the head coolant was directed into the heater core. Of course we live pretty far north in eastern Canada. So good heaters are welcome. The newer tdi volkswagon we purchased new had no heater at all in comparison.

I had a Jetta in 1991 that would click off 50-52 mpg....but, from such a small displacement engine, one would expect such numbers.

My goal is 37 mpg for the 300SD....

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Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

I think that should be attainable.
Why did you wait so long?

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85 Merc 300D - Unwinding 31 years of wear
86 VW TD
Mahindra Diesel
Iseki Diesel

In 2007 I didn't own a diesel.

Can you post details of the window cover? Pics?

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

Lack of time......

__________________
Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

Exactly.

This is what hyper-Milers do. They do a ton of tiny modifications to achieve incrementally smaller improvements in fuel economy.

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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".

PM sent

__________________
85 Merc 300D - Unwinding 31 years of wear
86 VW TD
Mahindra Diesel
Iseki Diesel

In 2007 I didn't own a diesel.