Did I kill my OM617 with oil?? - Page 3 - PeachParts Mercedes-Benz Forum

wildest · #31 07-18-2011, 10:36 PM

Quote:

Originally Posted by vstech

take serious note of the last line of the oil recommendation image...
"in temps above 30C use straight weight 40 oil EXCEPT FOR 617 TURBO DIESEL..."
to me, this means the diesel should ALWAYS use multigrade oil

The way I read it was that the numbers were referring to 2 different weights on the chart, the second reference being to not use 10-40 in the 617.95x turbos.

patbob · #32 07-19-2011, 06:42 PM

Quote:

Originally Posted by Sine

I also forgot to mention that on my last stop before the highway the other day, I filled up the tank with diesel. Maybe that contributed to the dislodging of some sludge.

No chance that could be significant at all

. You probably just got some bad fuel or fuel laden with crud. Or maybe there was some water in it that got strained out by the primary filter.

Go get a gallon of fresh D#2 from a different station and plumb the fuel intake/return into it. Drive it around on that a bit and see if the problem goes away.

Sine · #33 07-20-2011, 10:41 PM

Update #2: Finished cleaning the banjo bolt and lines from the ALDA to the intake manifold, and there was a ton of crud blocking it up! Now that it's all cleared out, the Benz runs really nice and smooth with a surprising amount of power. Sounds like I got my turbo back!

Huge turnaround from 6 days ago, and thanks to everyone who posted with your invaluable advice

JHZR2 · #34 07-23-2011, 11:20 PM

Quote:

Originally Posted by vstech

take serious note of the last line of the oil recommendation image...
"in temps above 30C use straight weight 40 oil EXCEPT FOR 617 TURBO DIESEL..."
to me, this means the diesel should ALWAYS use multigrade oil

Jus noticed this.

Actually the superscript 2 is for 10w-40 oil use, not related to superscript 1 which was about sae 30/40 oils.

JHZR2 · #35 07-23-2011, 11:30 PM

[QUOTE=leathermang;2753876]

Quote:

Originally Posted by JHZR2

....It is far better to have adequate flow as fast as possible under any conditions./QUOTE]

If you really believed that you would have a PreOiler on your car... just like many trucks do....
Do you have a preoiler ?

I really believe it and I don't. Have you looked at the differerence in viscosity between an sae40 and a 5w-40 at 40C?

Rotella 15w-40 is 120 cst at 40C
Rotella SAE 30 and 40 are 107 and 120 respectively.
Rotella 5w-40 is 87.

So if were talking a hot day, which one will pump faster/easier?

When it gets cold what do you think will happen?