1993 Mercedes w124 diesel modifications

[cRiPpLe_rOoStEr]

Originally Posted by SkauneJohan

exhaust brake? you know this is a regular car and not a big truck there is no risk of brakes getting overheated if I need to use them(rarely) so adding a exhaust blocker and reducing engine efficiency is not on the menu

An exhaust brake would only be used on demand. Well, even though the Diesel vehicles I drove more recently were 4WDs and not big trucks, I would actually prefer to resort to an exhaust brake sometimes. And since it's activated on demand, it wouldn't be such a hassle to the overall efficiency.

[SkauneJohan]

Originally Posted by cRiPpLe_rOoStEr

since it's activated on demand, it wouldn't be such a hassle to the overall efficiency.

I disagree, having sometthing like this right in the flow of exhaust does makes a difference

exhaust restricition usually have larger impact on efficiency than intake restriction because of the larger volume, especially the closer the restriction is it is to the exhaust manifold, this is also why getting a free flowing(tuned) exhaust and headers increase power and efficiency


anyway my car is at the mechanic again and this time for rear brake pads and atf oil change


with a little addative


hopefully she stops slipping between 2nd and 3rd at low throttle input now, atleast it wont hurt

after this it is time for oilchange, power steering fluid flush and lubrication of monowiper

[cRiPpLe_rOoStEr]

Originally Posted by SkauneJohan

having sometthing like this right in the flow of exhaust does makes a difference

Sure it may have some downsides, and would work better with an exhaust that had been dimensioned to overcome its eventual side-effects.

exhaust restricition usually have larger impact on efficiency than intake restriction because of the larger volume, especially the closer the restriction is it is to the exhaust manifold, this is also why getting a free flowing(tuned) exhaust and headers increase power and efficiency

Considering that most newer Diesels feature a variable-geometry turbocharger which also provides some sort of engine-braking under some circumstances, I wouldn't hold my breath for an exhaust-brake to have a worse effect than a throttle plate. But anyway, if I were going to buy a non-VGT Diesel right now I would still consider adding an exhaust-brake because my hometown and most other cities where I usually go are quite hilly.

[SkauneJohan]

alright finally got some driving with her and cannot even provoke slipping between 2nd and 3rd seems like oil and addative has done what it should

today i did an engine oilchange

time again, km flies away fast....



doing an engine flush this time too, since it made an improvement last time

oilfilter from wix this time

new oil from liqui moly

lastly a new sticker to remind me when next oilchange is


next up is airfilter and fuel filter, after that power steering fluid and monowiper lube up

[GreenTDI]

Nice to see that the car is well cared for.

What strikes me is that those good old engines require more oil and more frequent oil changes. Modern turbocharged common rail diesel engines last 30.000 km between oil changes with much less oil. Mine, for example, only has 4 liters. How can such a small amount still guarantee a purifying and lubricating effect after such a long period. Plus the fact that those downsized turbocharged engines are under more stress from higher pressure and faster moving parts.

They say: nothing as reliable as an old diesel engine, but may be also related to a shorter maintenance interval.

[jakobnev]

10W-40

Why not go to 0W-40?

[SkauneJohan]

Originally Posted by jakobnev

Why not go to 0W-40?

these engines doesnt like it(like many older engines) they get louder and less smooth and it is more expensive and it is the recomended oil

Originally Posted by GreenTDI

Nice to see that the car is well cared for.

What strikes me is that those good old engines require more oil and more frequent oil changes. Modern turbocharged common rail diesel engines last 30.000 km between oil changes with much less oil. Mine, for example, only has 4 liters. How can such a small amount still guarantee a purifying and lubricating effect after such a long period. Plus the fact that those downsized turbocharged engines are under more stress from higher pressure and faster moving parts.

They say: nothing as reliable as an old diesel engine, but may be also related to a shorter maintenance interval.

modern engines doesn't last 30 000km between oil changes.... but they do last until warranty is out and ususally a little more, planned obsolescence

the synthetic engine oil is better nowadays than before so 15 000km and if you drive far even 20 000km is usually acceptable, but there is a reason why most modern engines are pretty much ready for the heap at only 250-350 000km (other than bad computer boxes)

the looser tolerances within these old engines is also a reason for shorter intervals(other than old oil technology) which is one of the reasons why they do last quite easily 750 000km

one of many reasons for larger oil volume is the cooling effect, instead of adding an expensive oilcooler they just added more oil, larger oilpan is not that expensive and as a side effect you get more oil wich helps dilute the stuff that gets cleaned from the engine and making oil last longer

[GreenTDI]

Originally Posted by SkauneJohan

modern engines doesn't last 30 000km between oil changes.... but they do last until warranty is out and ususally a little more, planned obsolescence

the synthetic engine oil is better nowadays than before so 15 000km and if you drive far even 20 000km is usually acceptable, but there is a reason why most modern engines are pretty much ready for the heap at only 250-350 000km (other than bad computer boxes)

They really do. The 1.2 and 1.6 TDI for example, both have a 30.000km or 2 year interval. OK, it's synthetic long-life oil, but still. I prefer fresh oil more often for my car, so I do it in half.

[SkauneJohan]

Originally Posted by GreenTDI

They really do. The 1.2 and 1.6 TDI for example, both have a 30.000km or 2 year interval. OK, it's synthetic long-life oil, but still. I prefer fresh oil more often for my car, so I do it in half.

on paper they do last 30 000km between oil changes I know, but in reality they do not, but that is part of what the car makes want, the engines last until warranty is out...

if someone buys a new engine to keep driving the car that only has a broken engine but otherwise is in good condition they get profit...it is how stuff works today, just like constant computer box updates etc

[GreenTDI]

Originally Posted by SkauneJohan

on paper they do last 30 000km between oil changes I know, but in reality they do not, but that is part of what the car makes want, the engines last until warranty is out...

Everything used to be better. Your OM601 will last until the day there is no more oil to be found on this planet.