W123, MPG Products to Increase Mileage

diesel oil requirements in the 1980s

hey guys received my manuals the other day. well written and helpful. i guess i got lucky with my 240d buying it with limited MB knowledge. i do have a question as to what types of oil was mercedes requireing for oil changed in the early 1980s. my owners manual states that the car had regular maintanece (it shows 73k on the odometer but is has quit working) the oil changes were performed with castrol 20w 50 not exactly a diesel motor oil. these were done at authorized service ceneters . was this the best choice for oil back then? could this be the reason i have a lot of crank case pressure on an engine with less than 100k?

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

81 240D 3 Water Pumps In 6 Months

Hi--- I have an '81 240D fitted with the 2-tank Greasecar system. Don't do too much of my own work, but I'm using the 75 MPH Guide to keep Anna happy and healthy. So far, so good... but, I've gone through 3 water pumps in less than 10,000 miles. The 1st was the original, so I new that would happen. And it did at exactly 120,000. Had it replaced with a Bosch, which promptly failed. Had it replaced again with a German pump, the name eludes me. Well, this pump also failed and I'm having it replaced with a Mercedes pump. Fortunately, this is all warranty work.

Chassis Model Number

W123

Forums

Body and Interior Specific Aid

300TD window help

hey there...i have an 85 300td wagon...the front driver side window is inoperable...i tried replacing the switch...no change...the motor in the door makes the usual noise when i use the switch but the window doesn't move...i am assuming it is the regulator...could it be the regulator AND the motor???...any wisdom is appreciated...

Forums

Body and Interior Specific Aid

Taxonomy upgrade extras

Questions and Answers

Chassis Model Number

W123

82 300D has slight miss on one cylinder

82 300D has slight miss. This engine has 157,000 miles on it and runs good at highway speed. I can losen the fitting on each injector and make it run like a gas engine when you pull a plug wire. Has only slight miss when all injectors are tight. There is definitly a lose in power at low speed taking off from a light etc. The injectors have been pop tested and all are good. Compression test shows around 325 to 350 psi on all cylinders. I have adjusted the valves twice to make sure one was not to tight.

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

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