Is It Normal to See Small Oil Drops After RMS Replacement? (AMG GT 63 S – M177 Engin
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AMG GT 63s
Is It Normal to See Small Oil Drops After RMS Replacement? (AMG GT 63 S – M177 Engin
Hello everyone,
I recently performed major service on my 2019 Mercedes-AMG GT 63 S with the M177 engine, which included replacing the following components:
However, after about 200 km of spirited driving over 3 days, I noticed 3 very small drops of oil coming from the weep hole (the small drainage hole between the engine and transmission bellhousing). No oil was found on the ground — just these few spots inside the housing.
The mechanic told me that this may be residual oil trapped in an area that wasn’t opened during the repair — specifically because the oil pan (lower crankcase) was not removed. He explained that it’s normal to see a few drops like this after driving, as the leftover oil can be pushed out by heat and pressure during normal operation.
I’d really appreciate any advice or shared experiences — especially from others who have done RMS work on the M177 engine.
Thank you in advance!
I recently performed major service on my 2019 Mercedes-AMG GT 63 S with the M177 engine, which included replacing the following components:
- ✅ Rear Main Seal (RMS) – upgraded to the latest version
- ✅ PCV / Oil Separator
- ✅ Water Pump
- ✅ Thermostat
However, after about 200 km of spirited driving over 3 days, I noticed 3 very small drops of oil coming from the weep hole (the small drainage hole between the engine and transmission bellhousing). No oil was found on the ground — just these few spots inside the housing.
The mechanic told me that this may be residual oil trapped in an area that wasn’t opened during the repair — specifically because the oil pan (lower crankcase) was not removed. He explained that it’s normal to see a few drops like this after driving, as the leftover oil can be pushed out by heat and pressure during normal operation.
❗️My Concerns:
- Is this behavior normal after an RMS replacement when the oil pan wasn’t removed?
- Could it really just be old trapped oil from before the repair?
- Or does this suggest a possible leak or improper sealing?
I’d really appreciate any advice or shared experiences — especially from others who have done RMS work on the M177 engine.
Thank you in advance!
