gaspam

lol 250, sure that is fine if you are running a race car on the track that you change the oil after every race, but not for normal driving on a car that you change the oil every 10K...

The general rule of thumb is that for every 20F increase in oil temps, the rate of oxidation doubles. A typical engine may run oil temps in the 210F range, so if you are running consistent 250F temps, the oil is going to be oxidizing about four times as fast.

Not to mention at 250f you would be very close to the point to where our ecu's go into limp mode.... go over to the c63 forum and see how many guys had their cars go into limp mode due to oil getting too hot (above 260)

mobil 1 0w-40 hths ratings of 300f is under very short burst and not a sustained temperature. Considering that synth oils start to flash off at 230+/- deg f they are starting to break down. There is a very fine line between the oil being ok and when it starts to deteriorate

bottom line, M157 has been out since 2012 and no one has lost an engine yet due to thermostats not getting oil temp up quick enough.

/thread

PeterUbers

and I think it was in the 2011 s63

Mike450

Hence why true race engines with oil heaters run single viscosity oils and street cars run multi viscosity oils. That a pretty significant fact distinction to skip if you want to run with that argument. Let's not start discussing the significantly different engineering tolerances of how both those engines are designed either.

A 0 or 5 viscosity oil is designed to flow and protect at low engine temps. If there was truly an issue, it should be an easy case to make with the amount of AMG M157 running the world.

looney100

I just don't understand why everyone thinks this is a 'problem'. The oil in my 2015 E63S will easily take 15-20 minutes of easy driving to heat to 'white'. I just take it easy during this time.

chiromikey

I've never had a car that took that long to heat up the oil so it seems weird to me. One thing for certain, I'd go crazy if I couldn't get on the throttle for 20-30 minutes every time I got in my car!

Amg63-

Lol I agree 30 minutes warmup time is nothing short of ridiculous.

Zod

+1

Seriously how is this an issue?
Did the car warn you, is it written its bad, are they any cars/cases of people suffering issues (other than mental)

if not then where is the case exactly?

fun read though

omega_jeff

Hasty generalizations rule the day!

omega_jeff

I watched my oil temp closely this morning. My pre-facelift took exactly 10 minutes to reach 176 degF (when the lighted temp indicator stops blinking). Outside temp was 59 degF. And I was driving through the city with some stop-and-go traffic. It took another 10 minutes to reach full "normal" operating temp of 215 degF. (I call it "normal" as it seems my car sits at this temp when driving around the city streets). Not quite the "5 minutes" from the reports you're hearing about. But maybe those reports are under different ambient conditions and driving methods.

Mike450

Let us also keep in mind, this is a consumer gauge reading, not a thermocouple calibrated temp reading. You can't base an argument such as this based solely on a blue or white gauge reading. You need specific data.

Car manufacturer have been know to orienate gauge output to consumers on a need-to-know type basis info. That could very well be the case here.

I remember reading a bunch of years back that proper coolant temp on many gauges was moved to 12 o'clock, regardless of temp calibration on gauge face, because consumers would call for service thinking beyond half way was not "right". Gauges will also move way beyond face label calibration when things are not within spec.

If you notice, most OEM operating temps are dead center on gauge face. That's not by coincidence.

Astolfo

It DRIVES me crazy.....I buy a great car for commuting and I can't drive it hard for 1/2 of my commute. I have never had a car that take this long to "warm up"
I would think that you would want to bring all the systems up (and maintain) to operating temperature ASAP.

chiromikey

I understand the psychology behind gauge orientation but that's not what we're talking about here. And while I understand that this is not some scientific peer reviewed NASA approved space terature monitoring system, I still would bet that it's within a degree or two of actual temperature.

I also understand that this may not be or cause an actual problem, but it would be annoying as hell if I had to deal with a car that I couldn't flog for the first 30 minutes of every drive!!!

omega_jeff

Drive it like you want, then do an oil analysis at the end of the OCI to see if the engine is wearing as bad as you think. A better data set would be to perform oil analysis after multiple oil changes. Track the trends...then you can tell if anything is happening to your engine. Until then, it's all speculation.

Amg63-

I'm also guessing its probably very different between NA and turbo motors.

People are saying that the m156 E63 like yours does warm up a lot quicker than 14+ m157.

It would make sense that the turbo should be heating it up faster than NA but its not.

Someone did mention that 14+ has additional oil cooling added to it from factory that the pre facelift biturbo 12-13 models didn't have. So maybe that's what it is.

gaspam

all you guys must live in a polar vortex as mine heats up in about 5 min to 160f... move to FL, its 85f today

Amg63-

Some of us are in Canada eh...

omega_jeff

Ya, and 85% RH, all day....all night!

gaspam

lol this is true but that humidity keeps girls walking around in bikinis all day and night

Mike450

Lol... they used the term polar vortex on my local weather forecast today.

And I'm not Canadian, but we're looking at single digits this weekend.

jvakos

i'm in Chicago and today it was 10 Farenheit and damn freezing cold but after taking the car out of my garage (not-heated garage) the oil temp hit 160F in about 15-18 minutes with easy stop and go traffic.

considering coming from deep freezing temps that seems appropriate i assume??

i did read that oil temp must be at 160F to use race start, so that must mean something about potential unnecessary engine wear if driving hard when the oil temp is not at 160F and properly lubricating.

to me with a $100k car, its not a concern to wait 15-20 mins to ensure the oil temp is at the right level per AMG spec before hammering it...heck, when I hit the gym and weight lift it takes me 20 minutes to warm up before i can hit the heavy weight at 45yrs old!!!!!

jvakos

yeah polar vortex is right - am in chicago it was single digits Fahrenheit today and brutally cold!!!

Gaspam - with you being in miami, what temp at start up does your car show?

today as i started my car in the garage at 8F temperature, it initially showed 50F and then got to 160F at about 15-18 mins as i mentioned in my other post.

when i bought the car in October i recall it got to 160F pretty quick considering the outdoor temps were 60F or more.

Astolfo

I don't think the main concern here is about how we feel about the time it takes to get to normal operating temperature, but the fact that the engine is not getting properly lubricated until the oil gets to a proper temperature. In addition to it lubrication function, oil acts as a thermo-regulator ensuring that all components expand and contract in synchronous way. I had my Cayenne 9ff with 10-12qts of oil and it never took that long, but then different engines... I am sure that AMG somewhat knows what they are doing...

gaspam

mine usually shows 70 ish when it starts up in garage

Chappy

Took about 20 minutes for me to get to this temp.

kponti

I hardly get to that temp. I usually run in the 195-205 range