crehop

Dont take my word for it, take it from Tasos

Basically add 19mm to the dipstick.

swedepat

Yeah,, the man who recommends flipping the pin in the camphasers.....

2008-2012 says add two liters in info display.
And 2012 - 2014 says add one litre?

That means if the later one says add one litre, that the oillevel on the dipstick has the same toplevel, 8.5litres(~9quarts)
They have only thightened the interval to top up with oil when consumed, not raised the actual total amount of oil.
This probably due to engine needs to build oilpressure faster on startup.(the oilpump doesn´t need to pull oil from a low level as often as the owners finds it 'ok' to run with low level until the light comes on)
I say use the light as ultimate warning, and use the dipstick often to check your level, like every two weeks or so, or after/before trackday/mexico runs.

BLKROKT

No. Terrible idea. Do not do this. I’ve run with an extra 1-2qt of oil by accident and the engine did NOT like it. Felt sluggish and down on power big time. You run the risk of foaming the oil or worse. 19mm on the dipstick is a crazy idea, I imagine that’s at least 3qt. Dumb. Follow the instructions from AMG.

sventastic82

I don't hear him say to overfill your oil.
What he is trying to point out is, that the low oil level sensor on the 2008 sits lower than on a 2014.
That means when you have the message pop up that you need to add more oil to the 2008 to get to the full mark on your dipstick than on a 2014.

skullbox15

Agreed. Just a difference between the sensors. The engine and oil pan are the same size in all M156 versions.

crehop

if there is a 20mm shim added in the oil level sensor on the 2014 then that means that mercedes decided to add 20mm of oil to the pan so that also means the dipstick is 20mm lower on the 2008... was the oil pan redesigned? because it doesn't look like it was... so if it wasnt then that means add more oil...not to troll but please explain why this thought process is wrong and we shouldn't add more oil to a 2008 if Mercedes literally added shims to add more oil. by increasing the HEIGHT of the sensor.. it means more oil is needed to fill to not trigger it... if i add the shims to my 2008 pan.. ill need to add more oil to not get the light... seems stupid for people to say "no dont do this" without explaining why mercedes themselves would add shims

m156london

I agree with the others Taso's doesn't say to add more oil, the dipstick did not change and the full mark on the dipstick is still the same early vs late cars, what did change was the electronic sensor is detecting low oil sooner and the 2 things are mutually exclusive.

So you fill it the same to the full mark on the dipstick as per Merecedes recommendations, then as the oil decreases due to bad PCV, blow by, leaks etc the new cars detect that soon as the electronic sensor is 20mm higher so the new cars will tell you to add a liter when the oil reduces to the sensor height. In the older cars the sensor was lower in the pan so you need to loose almost 2 liters of oil before the dash will tell you to add oil.

So there is no difference on total oil capacity in the car, the difference is that new cars warn you sooner that oil is low, old cars wait until the oil is almost 2 quarts low to tell you which if people wait for the warning may be low enough to cause some starvation under high G loads.

So really the moral of the story is in both cases check your oil regularly by the dipstick especially if your car tends to loose oil and especially in the older cars don't wait for the dash to tell you to add oil as mercedes decided that was obviously too low for a warning and unless you want to take the pan off and shim your sensor, you should check your oil and add a liter when it is a liter low instead of waiting for it to be 2 liters low.

crehop

Well ok let me explain then... i have an 08 and i started looking into this when i noticed going over 70mph resulted in a "add oil at next refueling" light for me I was at the very tippy top of the mark afraid to add more so i looked into it and stumbled upon this video. After adding an extra 2 quarts it is now like 10mm above the fill line and it happily goes over 70mph for an hour with no light. Also heat is staying the same so foaming is unlikely. thinking it was a faulty sensor (since it was full to the tip top) went to see how to remove it and ended up here.

BLKROKT

Adding oil until you can drive 70mph with no light is a better “solution” than following the correct forever unchanging marks on your dipstick? Ok, good luck with that.

hachiroku

i think that's been disputed. the older M156's like in my W211 ask for 9.2 quarts of oil at fill up...i believe the W204 C63 asks for 8.7 quarts? i could be off, but that has been the on-going debate here.

sventastic82

Do you know how oil is foaming by being overfilled? It has nothing to do with heat or are you trying to compare to boiling water?

go team

This may be useless info but with the 44o kit I need to add more oil than the manual says. I measure it using the dipstick each time and not by quantity of oil I’ve used.

Once the oil level is close to max following the PROPER check oil level procedure then the level is good. At this level there is enough oil scavenging happening throughout all the operational rev range. I also check oil very regularly and never it go below this mark.

crehop

nah im saying it would cause less lubrication increasing temps.

Ragunarok

Agree with this except I had to refill up to the full line on the dipstick to stop getting the refill message on my 2010. New oil level sensor in so the sensor is not faulty.

ALFAitalia

Same with any engine....if you overfill the level could be high enough to be whipped into foam by the crankshaft webs (like a olive oil and a whisk) If it happens too much the oil pickup can start sucking up oil foam instead of actual oil....which is of course mostly air....not the best lubricant! So by adding too much oil you could end up damaging your engine in just the same way as if you engine did not have enough oil....so that would mean you would start by damaging the cams and lifters and work your way down!! Don't over fill...EVER!

sventastic82

I'm glad you answered a couple questions which were intended for someone else.

go team

If you empty at the oil cooler it will take some time for oil to prime and get all the air out of the system. Letting it idle does not always clear this air out you will need to drive the car and allow the air pockets to be expressed out. Then you’ll get low oil level once the system has been “bled” of air as the pan will have less oil with the plumbing all primed.

from the video the newer oil pans would be more sensitive to this change in level than the older ones based on where the sensor is at.

Dr.Speedfellow

I agree with this, happened after installing new oil cooler.

ALFAitalia

Sorry If I offended you.....usually no one cares who answers it as long as its answered and correct. Maybe next time you could put "Only to be answered by XXXXX"...since you seem so sensitive about it!!

roadtalontsi

I guess i've been doing it wrong on every m156 i've ever worked on including my own lol. Most cars are over filled anyways since hardly anyone knows to drain the oil cooler.

sventastic82

Well, I clearly quoted the guy who made a statement on foaming and heat.
So my assumption was, If I quote him he would feel spoken/written to and not somebody else.

I'm not offended at all. I was just looking forward to his answer.

sventastic82

Not emptying the oil cooler leads to overfilling? How so?

ALFAitalia

I would reply.....too scared now!!

Jasonoff

My guess is if you're a muppet and pour in the full capacity without checking the dip stick. There'd essentially be an extra liter in the system.

hachiroku

always drain the oil cooler. for my E63 i get 0.7-0.8 quarts of fluid out of that thing.