Appreciate any input.
Went to Mobile 1 brought my own oil filter had them drain/fill.

I watched them
drain-replace filter,orings-Fill
I told them add 8.5 quarts they said laptop says 9 I said fine.So for sure 9 quarts went in as I left with 1 quart out of 2 gal. Level is at max.

Check oil light pops on soon as you drive few blocks. Not immediately. Won’t go away until car shut off then comes back. Is this normal and will go away after few days?They said it’s because they need to reset the service but I know 100% this isnt the issue has nothing to do with oil level. These old x164 aint that high tec,or can the level sensor actually read overfill and 9 was too much?
No way,I think it only senses low levels.

What could they have done wrong?Drained from plug no wires touched. Filter was popped in dry. That’s it.

Wherever you look on mbworld and online it’s either 8.5 9 or 9.5 quarts. To add to the confusion MB says oil level MUST be in between min and max not at max line even though this level can be achieved with much less then 9qt.

Can I add 1/2 quart with no long term damage to see if that solves it then it will 100% have 9.5. But I’ve been short 1 quart before with no warnings. If 10qt will take the warning away can I safely do that?

Could low oil pressure trigger this light? That’s the ONLY part that scares me as these don’t have oil pressure gauge so why would it even have a pressure sensor let alone tied into level sensor.

Thanks guys
5w40 euro now
for summer I used 5w50 mobile. All approved oils.
07 Gl 450 120k

 

You said "I left with 1 quart out of 2 gal". A gallon is 4 quarts. Unless your math is different than mine, that means you put in 7 quarts

Are you sure about the oil level on the stick? If the oil level is correct, I wouldn't add more - no reason to.

Is there oil in the filter housing?

What exactly does the warning look like or say?

I would want to check the oil pressure.

 

If I remembered correctly, there is a specific requirement for certain vehicles, the specific additional requirement is noted on the datacard of the vehicle.

I can't remember what the code is or the term they used.

 

You should measure the oil capacity at operating temperature. I had a very similar experience (see the thread I just posted in the X166 forum) - you'll get different readings at different temperatures and at least on my M278 I was told a lot of oil stays in the valve area.

 

If you have 9 liters of oil in there the stick should be full and you are ok.

if you have 7 the check oil warning will come up every time until the sensor detects above 8.

there is a level sensor which could also be malfunctioning.

 

Thanks,Yes correct, I brought 2 jugs with 5 quarts in each.The Big walmart Bottle.

I have not opened the filter housing after the change. He did not put oil in there just popped the filter in.

I made them check the level and I checked it many times. It’s at the max level. This was done when engine was hot.

The light is the MB ‘Check oil level at next fill up’

As you said the oil pressure is the only reason I came in here for help I am worried maybe the filter is somehow blocking flow or maybe it takes time to get flowing better idk 🤷🏻 I assumed that some oil was supposed to be poured in there I thought I read that someWhere on here I might be wrong.

 

I brought 2 Walmart jugs I left with 1 quart leftover in 1 bottle.The Wally jugs say 5 quarts or am I wrong?My thinking is adding half a quart doesn’t make sense as the sensor will not come on for a half quart low as you mentioned it takes prob 2 quarts for it to trigger light. Im starting to wonder if the Mann filter off Amazon is the culprit but it was purchased direct from Mann. My worry is oil pressure and there’s no way I can check that myself.

 

So be sure the jugs say five and not 4 quarts… I did that once the wrong way thinking it was 4 quarts per handle and it was five so I grossly overfilled my Vortech ain’t .1

so if you have 9 quarts in there, you have the requisite 8.5 L. That then points to a malfunctioning oil level sensor.

if your handles are only 4 quarts, then you only have seven in there which is 6.6 L which will trigger the low/check oil warning.

 

Okay so I checked oil level cold after car sat a day. I always thought all these yrs that full max was the whole plastic piece on MB but now I just learned where min max lines are. Anyways oil level covers the whole Plastic to where I circled so obviously slightly overfilled?

Reading up on this group people say using the drain plug will not remove all oil so whatever it doesn’t remove stayed in there plus 9 quarts. Anyways I’ve always filled my MBs to this over the mark level no warnings no issues.Do these x164 oil sensors actually read overfill??I thought they only sensed low levels?Can anyone confirm?


I really appreciate everyones help.Sorry for all the long posts. It’s just a oil light is not something to ignore.And Its only got 120k now.
looks like I’m gonna just have drive it like this hope it goes away on its own. I started the truck and checked the level and there’s no oil on the stick running so it’s pumping and has pressure.

So It comes down to either a sudden bad sensor just from removing the plug on Pan and such a small disturbance killed sensor or the only other thing wich is what I am really thinking is the issue,the Mann filter wich I purchased from their online store wrong part bad part etc. or something with how he installed it. That’s all it can be.Some People say to put some
oil in there maybe to prime it idk but he didn’t do
That. Maybe that’s just online propaganda.

I’ll pop it off see if it’s soaked. I’m sure it only goes on 1 way I watched him do it. But that will give me peace of mind. btw this Mobile 1 place was a bad idea from the get go. As I waited in line these kids knew nothing about the cars they were touching always jumping 1 car to the other always asking what model what weight oil etc. things that are clearly on the car. And I was going to leave but it was my turn. I knew something was gonna happen when they didn’t even have the socket for MB filter I had to give them mine and this is a Mobile shop.

Thanks to everyone who responded.

It’s filled to the tip end

 

If it is only filled to the area you have circled, you need about a quart and a half additional oil. Overfill message is completely different. It literally says you have too much oil.

 

That is not enough, get it to the middle of the min and max line at least.

 

Unless you're in Australia, you actually have it backwards. The "tip" end is the (or near, anyways) LOW end of the range of where oil should be.

Think about how it gets inserted - the tip end would be closer to the bottom of the oil pan.

Put another quart of oil in there.

 

Yeah, your level sensor is correct

You need to put it at least another liter of oil in there and remeasure. Should be to the top of the indent.

that being said you’re not doing any damage by running a quart and a half low you still have like 7 1/2 L of oil in there which is twice a normal car engine.

 

I would definitely add more especially if running at high RPMs.

 

you have circled the MIN, not the MAX.Max is at the other end of the indented area.

 

Check Engine Oil At Next Refueling - MBWorld.org Forums

 

WIS says to check oil level a accurately, the car must be at operating temperature, switch engine off, wait 3-4 minutes, clean dipstick, reinsert and wait 5 seconds and then check.

 

 

If anyone is still around

I’m still having this issue. Warning pops on always after only few minutes after driving but does not come on when car is parked warming up after a cold start even if it’s 15-20 min warming up on a hot day.This has to point to the culprit. You must drive for it to trigger low oil light.

Anyways mistake I made in orig post is oil level is not at blue circle it’s at black circle max Level and even slightly above that.

But these trucks don’t have a too much oil sensor. So I doubt extra oil is causing it?The truck got what the factory and this forum call for 9 quarts. The extra oil must be what didn’t drain out from oil pan.According to the stick,it covering the whole red area it’s atleast 1/2-1 quart over filled.

 

You need to check the oil at operating temperature. Get it to 85 degrees C, and then check the oil. Then fill it.
It will appear higher after sitting. It needs to read in range at operating temp, a lot gets in the valve cover.

 

Get the oil down to the proper level and see what happens. I suppose it's possible that too much oil could be causing aeration and the sensor not reading properly.

Regardless, your first step (as it was before) is to get the oil to the proper level.

 

It is entirely possible it is reading overfilled and instructing you to check the oil.

 

Yup, need to check after reaching operating temperature and then after engine off for 5 minutes or so.