123 300D-T poor mpg! What do you get? HELP!! - Page 2 - PeachParts Mercedes-Benz Forum

toomany MBZ · #16 06-17-2009, 12:00 PM

Quote:

Originally Posted by helpplease

X2 on the ebay cars and they will last 1,000,000 miles

Before your first oil change!

Jeremy5848 · #17 06-17-2009, 12:06 PM

Might this be a California car with a trap catalyst? That reduces mileage as well as performance.

Hip001 · #18 06-17-2009, 02:57 PM

Quote:

Originally Posted by ::matthew

buy one on ebay...they get 40-50mpg

Buy what on Ebay? Car or 5spd to convert it to?
I would be interested in a 5 spd conversion!

Hip001 · #19 06-17-2009, 03:00 PM

Quote:

Originally Posted by Jeremy5848

Might this be a California car with a trap catalyst? That reduces mileage as well as performance.

How would I know if it is a Cali car?

I typed before I thought, This car was purchased in Jacksonville Florida brand new.

#20 06-17-2009, 03:05 PM

One way to tell if its a Cali car is to look at the air filter is it a normal one or is it huge and tall? huge and tall=cali. Or look underneath the turbo and look for a huge brown canister looking thing........that is the dreaded Trap Ox......Might just need a good tuneup both regular and Itailian

::matthew · #21 06-17-2009, 03:14 PM

Quote:

Originally Posted by Hip001

Buy what on Ebay? Car or 5spd to convert it to?
I would be interested in a 5 spd conversion!

I was being silly.

People on eBay always throw out ridiculous numbers for fuel economy.

You probably saw mine at the GTG...it is a cali model. Turbo is up higher and the air cleaner is up front.

MBeige · #22 06-17-2009, 03:24 PM

Where's Jimmy when you need him?

kingdoc1 · #23 06-17-2009, 03:25 PM

Congrats on purchasing a nice MB. Your 1985 model should have the 2.88 rear axle ratio, which helps make it among the most economical w123's as far as fuel economy. With everything functioning properly, 28 hwy should be easy. You won't do much better with a 240, and it will be considerably slower.

Quote:

Originally Posted by Hip001

I just picked up a SWEET 1985 300D Turbo. 206k miles, Beautiful car inside and out. I checked the mpg after filling up the 2nd time. 18.5mpg

????

Your mileage should not be based on 2 fill-ups. There are alot of variables that can affect mileage, average it over time.

I was told be the previous owner that 30mpg was the norm and told by Pierre that 28ish mpg could be expected. What the heck is knocking it down 10mpg?? Pierre said he thought my valves need adjusting(they are tight he said). Is this alone the problem or are there other factors?

Are you sure your turbo is working properly and the boost is getting to the Alda? Check your overboost protection valve, boost line and banjo bolt. Verify proper valve adjustment. Make sure your engine is running at normal operating temperature--a cold diesel is very inefficient and will really suck fuel.

What car do you have and what MPG do you get?

My 1982 300d will consistently get attain 26- 28 hwy.

TylerH860 · #24 06-17-2009, 03:29 PM

Quote:

Originally Posted by MBeige

Where's Jimmy when you need him?

I'm curious as to his D-T ruling, actually. Its not quite as atrocious as a plain DT.

MBeige · #25 06-17-2009, 03:36 PM

Quote:

Originally Posted by TylerH860

I'm curious as to his D-T ruling, actually. Its not quite as atrocious as a plain DT.

As Jimmy would say, "I'm just sayin'!"

Hip001 · #26 06-17-2009, 03:44 PM

Quote:

Originally Posted by TylerH860

I'm curious as to his D-T ruling, actually. Its not quite as atrocious as a plain DT.

I like the DT but somewhere I saw it listed as a 300D Turbo. Is this a newbe thing till i get more Benz info knowledge?

LOL!

rrgrassi · #27 06-17-2009, 03:47 PM

My MB mileage certificate award show my car to be a 300D-T. Mine is the '82 year model built in Oct 1981. The 81 model year sedan and coupe did not have the turbo. The -T may be MB's way of noting the difference.

I still read the "trunk badge of truth"