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I just picked up my car from the dealership after having the oil pan replaced. They are telling me this is the correct oil level but I think it is one bar low. Is this correct or not ??
Yes and yes. You're fine as it is, but if you add 1/2 quart you'll be fine too. In a car with a less than stellar, and expensive to correct, PCV system, a little less oil is better than a little too much oil. Windage in an M177 motor is not your friend.
Yes and yes. You're fine as it is, but if you add 1/2 quart you'll be fine too. In a car with a less than stellar, and expensive to correct, PCV system, a little less oil is better than a little too much oil. Windage in an M177 motor is not your friend.
First time hearing about this, could you expand on this, why is it so?
I thoguht running near max oil level is optimum?
First time hearing about this, could you expand on this, why is it so?
I thoguht running near max oil level is optimum?
Windage is the term used when the lower part of the crackshaft is touching oil in the oil pan. As the crank spins, it whips the oil into vapor in the crackcase. So you never want to have enough oil in the crackcase to where it touches the bottom of the crankshaft. Excess oil vapors contributes to clogged PCV valves. And in the case of the M177, which has a fancy smancy PCV system, otherwise known as oil vapor seperator or OVS for short. This problem is somewhat mitigated by an upper crankcase cover, which is a plastic shield under the crankshaft; it has an oil pickup tube attached to suck oil out of the lower crankcse for engine lubrication. It's actually pretty cool stuff and I'm not the best at explaining. If you want a better explanation I'll grab a couple YT videos for you.
Windage is the term used when the lower part of the crackshaft is touching oil in the oil pan. As the crank spins, it whips the oil into vapor in the crackcase. So you never want to have enough oil in the crackcase to where it touches the bottom of the crankshaft. Excess oil vapors contributes to clogged PCV valves. And in the case of the M177, which has a fancy smancy PCV system, otherwise known as oil vapor seperator or OVS for short. This problem is somewhat mitigated by an upper crankcase cover, which is a plastic shield under the crankshaft; it has an oil pickup tube attached to suck oil out of the lower crankcse for engine lubrication. It's actually pretty cool stuff and I'm not the best at explaining. If you want a better explanation I'll grab a couple YT videos for you.
I see, cool, learned something.
Deffo post YT vids if you have them!
Oke cool, good to learn new things.
Im thinking I will keep mine at around 75% (if min is 0%, max is 100%) for harder driving and occasional track day.
Oke cool, good to learn new things.
Im thinking I will keep mine at around 75% (if min is 0%, max is 100%) for harder driving and occasional track day.
Glad that helped. But for a car without a dry sump, and with a lower oil pan shield, it's probably best to keep it close to 100% on a track day. Oil "can" slosh around under in the oil pan hard cornering to a point where the oil pickup tube won't be in the oil. That will cause oil starvation and engine damage. MB did a fantastic job designing this engine, even with all the known faults. So close to 100% but not over, is great. I have a 18 S63 and in the AMG Service menu it there's a screen that let's me know within 1/1th of a litre how much oil I have. Not sure if the W213 has that. If so, I would use that as a guide instead of the regular menu. Maybe someone can chime in about that other menu and how to access it. For my car, I use the same procedure as when I'm putting the brakes in pad replacement mode.
Here's a video of how to access that menu, oil level is under the "vehicle Data" section:
Yeah I know about having oil level to the max before trackday in order to prevent potential oil starvation, but assumed 75-80% is best of both worlds.
So even considering windage, its probably best bet to have it on max before trackday?
Found the service menu in my w213, saying I have 8.2L which is much more precise than that oil level graphic
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