Reduced OM617 blowby: easy - PeachParts Mercedes-Benz Forum

Rocket99 · #1 08-03-2016, 09:52 AM

I once I heard a MB mechanic say if you keep the engine oil above the full mark on the dip stick they seem to "blow" less oil. He was referrring to an nearly worn out 240D.

Lo and behold: Annoyed by paper air filters fouled by oil recently I've been keeping my OM617 turbo at least one quart and as much as two quarts above the full mark on the dipsitick , maybe 3/4 in. above, ... suddenly .... the interior of the air cleaner can is not getting oily and fouling the air filter element like it used to. Not nearly as much.

Im guessing that if this does pan out as real over time ... the cylinder walls could be getting much more lubrication from splash and that oilier picture could obstruct / seal against passage of combustion gasses ... blow by ... producing less oil vapor mess.

mach4 · #2 08-03-2016, 10:18 AM

Quote:

Originally Posted by Rocket99

I once I heard a MB mechanic say if you keep the engine oil above the full mark on the dip stick they seem to "blow" less oil.

Ha, that's nothing... I once heard a MB mechanic say that these MB diesels are so tough you don't even need to change the oil.

...and I recently heard a politician say...oh, nevermind, I don't want to get banned.

Stick around long enough and you'll hear almost anything.

leathermang · #3 08-03-2016, 10:45 AM

Quote:

Originally Posted by Rocket99

I once I heard a MB mechanic say if you keep the engine oil above the full mark on the dip stick they seem to "blow" less oil. He was referrring to an nearly worn out 240D.

Lo and behold: Annoyed by paper air filters fouled by oil recently I've been keeping my OM617 turbo at least one quart and as much as two quarts above the full mark on the dipsitick , maybe 3/4 in. above, ... suddenly .... the interior of the air cleaner can is not getting oily and fouling the air filter element like it used to. Not nearly as much.

Im guessing that if this does pan out as real over time ... the cylinder walls could be getting much more lubrication from splash and that oilier picture could obstruct / seal against passage of combustion gasses ... blow by ... producing less oil vapor mess.

YIKES , you actually believed that ...without doing any checking around ?
The problem has to do with foaming of the oil ... which causes oxygen to be incorporated into it....and CUTS ITS lubrication ABility ( its half life ) ...

Rocket99 · #4 08-03-2016, 10:53 AM

Quote:

Originally Posted by leathermang

YIKES , you actually believed that ...without doing any checking around ?
The problem has to do with foaming of the oil ... which causes oxygen to be incorporated into it....and CUTS ITS lubrication ABility ( its half life ) ...

What problem?

What indication of foaming?

what indicaton of loss of lubrication?

This is (these are) why read only a tiny select group of posters/ responders on these boards ... very little sign of intelligence .... Trump like folks.

leathermang · #5 08-03-2016, 10:54 AM

Quote:

Originally Posted by Rocket99

What problem?

What indicationof foaming?

what indicaton of loss of lubrication.

This is why read only a tiny select group of posters on these boards ...

I hope you put ME on your IGNORE list....
lol

EDIT... thought of more bigger issues which apply to the ' trust factor' he mentioned..

Why would you buy an automobile made by engineers who you do not trust to mark the dipstick oil level at the proper places ?

mach4 · #6 08-03-2016, 11:38 AM

The first rule of forums: Never have a battle of wits with an unarmed person...

leathermang · #7 08-03-2016, 11:40 AM

Quote:

Originally Posted by mach4

The first rule of forums: Never have a battle of wits with an unarmed person...

Sorry, got caught up in the moment...

charmalu · #8 08-03-2016, 11:53 AM

Quote:

Originally Posted by Rocket99

What problem?

What indication of foaming?

what indicaton of loss of lubrication?

This is (these are) why read only a tiny select group of posters/ responders on these boards ... very little sign of intelligence .... Trump like folks.

You shouldn`t over fill the oil level on the stick, It has been mentioned many
times keeping the level down consumes less oil.
Think MB sent out a memo on this several years ago.

All engines have some blow by, more as the engine ages with wear.

It`s not a good idea to insult people with "very little sign of intelligence", as you put it.
There is good and evil...your choice.

Charlie

Rocket99 · #9 08-03-2016, 12:06 PM

Quote:

Originally Posted by charmalu

You shouldn`t over fill the oil level on the stick, It has been mentioned many
times keeping the level down consumes less oil.
Think MB sent out a memo on this several years ago.

All engines have some blow by, more and the engine ages with wear.

It`s not a good idea to insult people with "very little sign of intelligence", as you put it.
There is good and evil...your choice.

Charlie

Ah, signs of intelligence.

I do disagree with the technical point and place more stock in what I observe as I posted than what has been mentioned by many. In fact my observation is the opposite .... with the oil kept at a higher level it consumes less. No kidding and its well worth it in effort and expense of fouled air filters too in addition to smoke, pollution etc.

Many things have been written and in settings like this any low life with a keyboard can express his problems projected at others .... only a small, actually a very tiny, proportion are technically proficient, and make sense too. Tiny.

I've noted your good intentions over the years, so I do read what you write.

This environmant, unfortunately, is like hanging out in a dive bar.

I do not think it used to be this bad. I definately no longer hang out here, so few knowlegeable folks and too many sicky folks.

The initial responses are a good example if that.

leathermang · #10 08-03-2016, 12:15 PM

Quote:

Originally Posted by Rocket99

...I do disagree with the technical point and place more stock in what I observe as I posted than what has been mentioned by many. In fact my observation is the opposite .... with the oil kept at a higher level it consumes less. No kidding and its well worth it in effort and expense of fouled air filters....

So you have decided that the cost of fouled air filters , not proven that the cause was keeping the oil at the prescribed marks, is more important than any potential for affecting its LUBRICATION ability ?

' more stock in what I observe ' .... yes, you should go with that... as those automobile companies who have spent multimillions of dollars testing lubricants just want you to have to buy a replacement car faster.. and are making big money out of selling the air filters.... and do not care about their reputations for selling long lasting and reliable automobiles...

For other watching...
look up ' windage trays' and ' dry sump' oil systems....

greazzer · #11 08-03-2016, 12:34 PM

Are you saying over-fill by a smidge or a bunch? If you observed / experienced what the mechanic said / predicted at one point, did the mechanic indicate why this phenomenon?

SD Blue · #12 08-03-2016, 01:01 PM

Another factor on a diesel engine is called "runaway". Many diesel engines have warning labels now, cautioning against overfilling the oil due to this problem.

Of course, if your engine had a runaway, the mechanic you talked to might increase his workload and his bank account.

leathermang · #13 08-03-2016, 01:40 PM

Quote:

Originally Posted by greazzer

Are you saying over-fill by a smidge or a bunch? If you observed / experienced what the mechanic said / predicted at one point, did the mechanic indicate why this phenomenon?

In his first post he said this "" I've been keeping my OM617 turbo at least one quart and as much as two quarts above the full mark on the dipsitick , maybe 3/4 in. above, ..""--Rocket99

oldsinner111 · #14 08-03-2016, 01:47 PM

Overfilling causes blow to front,and rear seals,plus all seals

greazzer · #15 08-03-2016, 01:50 PM

Quote:

Originally Posted by leathermang

In his first post he said this "" I've been keeping my OM617 turbo at least one quart and as much as two quarts above the full mark on the dipsitick , maybe 3/4 in. above, ..""--Rocket99

my bad .... pays to read I guess.