How many of you actually drain the oil from the oil cooler in your M156?




The oil cooler itself holds about a quart of oil, so if you don't drain it, your introducing that dirty oil back into the clean oil that you just added. The oil cooler uses the same metal gasket as the oil drain plug.
This is why some of you can only add about 8 quarts, instead of the recommended 9.2 quarts in the M156. I make this a point at every single oil change.




I know the clean oil will not be clean for long, when it runs through the entire engine mixing with all the residual dirty oil left inside the engine. But I for one make it a point to drain it.




It uses the same metal gasket as the oil pan. Remember not to over tighten it, or you risk cracking your oil cooler.
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Last edited by Yuille36; Nov 12, 2019 at 04:07 AM.




And I buy (2) 5 qt jugs from Walmart. The owners manual says that the car holds 9.2 qts of oil, but I don't know if that is the minimum or maximum levels. My car doesn't burn oil or smoke on start ups, so that eliminates leaking valve seals. So your guess is as good as mine.




Or you might have excessive oil in your intake from the PVC valve, who knows?
So if your putting in exactly what your getting out, then I would say that your okay.
And I dont use special oil...Mobil 1 0w-40 full synth












And if he adds that extra .5 qt, then he is over the max fill level.
This is certainly baffling to me
Does anyone know what was part number for the old version of dipstick? I'd buy one if I could.
Yuille36, the engine runs smooth. Wouldn't I feel engine shake of some sort if I had blocked passage? Also when I open the plugs the oil flows fast. Next time, I will change the oil myself and measure how much comes out.




Does anyone know what was part number for the old version of dipstick? I'd buy one if I could.
Yuille36, the engine runs smooth. Wouldn't I feel engine shake of some sort if I had blocked passage? Also when I open the plugs the oil flows fast. Next time, I will change the oil myself and measure how much comes out.
I know that when I'm close to changing my oil for the year, if I'm low on oil it notifies me, to add oil and next fill up.
I know that when I'm close to changing my oil for the year, if I'm low on oil it notifies me, to add oil and next fill up.






Fun fact: yesterday there was a Ford Mustang GT in front of me at a street light. I think they have 5.0 liter engines and are fast cars. The guy pulls hard on green and spins tires. I know it is a provocation and don’t pay attention. I see that he drives slowly ahead waiting for me to line up for a rolling drag race. I line up with him, we drive about 35 mph and floor it. I was in comfort mode. Oh man, I could see him in my left mirror behind me all time and was pulling away from him more and more
We slowed down later, waved at each other and smiled. That was 50-60 years old gentleman, but clearly a petrol head. That made my day
It wasn’t in the city though. It was a backroad in Mountains so it was safe.It is awesome that 11 years old car still leaves majority of modern cars behind it easily. Love my AMG
Last edited by Rovel; Oct 22, 2018 at 09:19 AM.






