Engine Oil Temp is too high? Goes up to 120c (248f)
Been noticing my engine oil temp gets a bit hot. Starting it up and idling it will get to around 102 - 105c. Driving normally in C mode stays around 105c - 108c. Driving in Manual with upshifts at 4k+ and downshifts at 3-4k gets the oil temp to 120c or over. Basically cruising around with 3k rpm and some heavy feet results in 115-120c. Is this normal? I live in Toronto and the weather is usually 20-25c when I drive.
Recently did oil change and put in 10L of Mobil1 0w40, which didnt help the oil temp go down. New oil filter, KN filters, and charcoal delete. Straight piped cats with EC v6. No mods.
Also, don't know if this is related but the mechanic pulled stored codes since they were last cleared. This code was stored:
"P1061 (1061) The load limit is active."
Did lots of searching and can't find anything on this.
Last edited by NotABaller; Jul 24, 2017 at 03:00 PM.
You are shifting up and down at pretty high rpm. This will definitely cause your oil temperature to run higher than normal. It will also typically cause some oil consumption (my own C63 uses zero oil).
The higher oil temperature will also reduce engine oil life, so don't push the oil change intervals.
Jim G

The C63 has the classic hot rod problem of big engine stuffed into a small body with a small and tightly enclosed engine compartment. Works ok for short burst uses of the power, but extended "spirited driving", and certainly any track time, quickly shows why the cooling kit and the hi-po brakes exist.
Jim G
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You are shifting up and down at pretty high rpm. This will definitely cause your oil temperature to run higher than normal. It will also typically cause some oil consumption (my own C63 uses zero oil).
The higher oil temperature will also reduce engine oil life, so don't push the oil change intervals.
Jim G
My car is never at 100c. I can drive it granny style in comfort mode and itll stabilize at 105 or even 110. I'm guessing this is okay since I was just in Victoria and the climate is entirely different. Its freaking cold there.

The C63 has the classic hot rod problem of big engine stuffed into a small body with a small and tightly enclosed engine compartment. Works ok for short burst uses of the power, but extended "spirited driving", and certainly any track time, quickly shows why the cooling kit and the hi-po brakes exist.
Jim G
That cooling kit is expensive, but not that bad. I called a few dealerships to ask for the price and I think they said it is CAD $2800. Labor is fairly easy I think. But combined with $4000 headers and around $1000 to install both, this hobby gets expensive.
Last edited by NotABaller; Jul 24, 2017 at 03:20 PM.
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I don't think i have ever seen 120. And that includes running 1/4 and 1/2 mile events.
I'm planning on doing a track day sometime soon, so we will see how the temperatures react to that.
I don't think i have ever seen 120. And that includes running 1/4 and 1/2 mile events.
I'm planning on doing a track day sometime soon, so we will see how the temperatures react to that.
This is 20-25c ambient. Weistec has the fan programmed to run the all the time but I'd assume that wouldn't help much unless slow or idling lots.crusing the airflow should be the same.




For reference, my summertime 44O temps vs stock cooling (F):
Cruising: 212 / 221
Manual w/ 4k shifts: 221 / 236
WOT pulls (1/4mi): 230 / 240
Track day (max): 256 / 286
High volume airflow through the coolers is critical for the 44O. At lower speeds (heavy stop-and-go traffic moving in 1st gear), it might actually be worse than stock because the pass side bumper helper fan for the oil cooler is removed. Decelerating from high speed (heavy braking + decreasing load engine condition + high airflow), water temps plummet and drag down oil with it. 44O shines best in high speed and accel/decel transitioning conditions.
Last edited by BLKROKT; Jul 24, 2017 at 05:56 PM.
Thats a drag, cos in this discussion I was curious who is in a FL or PFL.
Maybe we need to change our sigs now.
For reference, my summertime 44O temps vs stock cooling (F):
Cruising: 212 / 221
Manual w/ 4k shifts: 221 / 236
WOT pulls (1/4mi): 230 / 240
Track day (max): 256 / 286
High volume airflow through the coolers is critical for the 44O. At lower speeds (heavy stop-and-go traffic moving in 1st gear), it might actually be worse than stock because the pass side bumper helper fan for the oil cooler is removed. Decelerating from high speed (heavy braking + decreasing load engine condition + high airflow), water temps plummet and drag down oil with it. 44O shines best in high speed and accel/decel transitioning conditions.




If you're not seeing limp mode now though, I don't see why you would get the 44O. It's only extended oil temps over 260 that are really bad.
If you're not seeing limp mode now though, I don't see why you would get the 44O. It's only extended oil temps over 260 that are really bad.
Thanks for the info.








It can be found with a search of "radiator blockoff plate", I think the thread is called "Keeping Your Cool".
EDIT: Thread here: https://mbworld.org/forums/c63-amg-w...ping+Your+Cool
Last edited by BLKROKT; Jul 25, 2017 at 11:40 AM.
Glad to see that the cooling packing is paying off for BLKROKT.





