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Aston Martin Vantage, GLE 43 AMG, Volvo XC60, BMW X1 35i, Ram 1500, BMW Z4 35i
So... what happens if you just let the RMS drip and solve the separator issue that is causing the higher pressure...
The only reason I ask is on my Aston Martin I had a weeping seal on the engine and the dealer suggested I monitor it... It drips or weeps occasionally and that was 4 years ago and they have not recommended taking things apart.
So... what happens if you just let the RMS drip and solve the separator issue that is causing the higher pressure...
The only reason I ask is on my Aston Martin I had a weeping seal on the engine and the dealer suggested I monitor it... It drips or weeps occasionally and that was 4 years ago and they have not recommended taking things apart.
Interesting thought.
If the RMS fails by excess crankcase vacuum and yields (gets sucked in and creases), hard to guess if the seal either pops back into place or not, or if it pops back into place whether a persistent leak would be present or not.
If the RMS fails by excess crankcase pressure (“blows out”) the theory could be that the RMS returns to its proper shape and seals more or less properly.
The first failure mode is more potentially damaging in my view.
Replacing the OVS never hurts and always helps in my view.
So... what happens if you just let the RMS drip and solve the separator issue that is causing the higher pressure...
The only reason I ask is on my Aston Martin I had a weeping seal on the engine and the dealer suggested I monitor it... It drips or weeps occasionally and that was 4 years ago and they have not recommended taking things apart.
These seals fail catastrophically. Huge hunks of seal deform. It won't be long before the small leak becomes a huge mess.
These seals fail catastrophically. Huge hunks of seal deform. It won't be long before the small leak becomes a huge mess.
I am calling BS on this. I have seen seals like this go a very long time and if anything the leak gets only slightly worse over a very long period of time. The downside is you do have a constant drip of oil that can make a mess of the underside of your car.
I am calling BS on this. I have seen seals like this go a very long time and if anything the leak gets only slightly worse over a very long period of time. The downside is you do have a constant drip of oil that can make a mess of the underside of your car.
Aston Martin Vantage, GLE 43 AMG, Volvo XC60, BMW X1 35i, Ram 1500, BMW Z4 35i
Originally Posted by chassis
This seal is finished. Any similar failure means the seal is toast.
the lip on that seal is soo thin... what a waste in trying to save a few bucks for such a catastrophic failure...
do we know if they have improved the part or just replacing with the same POS
Last edited by whitewagon; Sep 15, 2024 at 08:04 AM.
the lip on that seal is soo thin... what a waste in trying to save a few bucks for such a catastrophic failure...
do we know if they have improved the part or just replacing with the same POS
The seal and the oil separators have been updated.
The link in my post above contains a side-by-side of the seals. I haven't seen any details about the separator upgrade. I imagine it's internal.
The new RMS assembly is a clear cheapening by MB. Stamped steel carrier plate vs cast Al or Mg in the original design. Carrier plate has no influence on the plastic seal design imo. The photos show no discernible detail in seal lip or press bore.
Completed work from the local Indy. Took about a week, picking up the car first thing tomorrow morning. Will ask if they saw which OVS was cracked. Not a terrible deal all in all.
Completed work from the local Indy. Took about a week, picking up the car first thing tomorrow morning. Will ask if they saw which OVS was cracked. Not a terrible deal all in all.
This thread is surely in the running for longest post... somehow divided in two, perhaps by the system. Part 1 started on Mar 7, 2023. Part 2 started the month April and is still going strong in Sep 2024.
Given the parts aren't terribly expensive, it's almost a good idea to order all the parts--hardware, seals, bolts, oil separator--and put it in a tub. Or, since RMS leak is not catastrophic, buy all the parts, have them at the dealer under your name (like any part order), and then drop the car off for the operation when all the parts are in hand. I'm sure the technicians don't like to start and stop a job. I know I don't like it in my work. So much effort coming back up to speed after each delay.
This thread is surely in the running for longest post... somehow divided in two, perhaps by the system. Part 1 started on Mar 7, 2023. Part 2 started the month April and is still going strong in Sep 2024.
Given the parts aren't terribly expensive, it's almost a good idea to order all the parts--hardware, seals, bolts, oil separator--and put it in a tub. Or, since RMS leak is not catastrophic, buy all the parts, have them at the dealer under your name (like any part order), and then drop the car off for the operation when all the parts are in hand. I'm sure the technicians don't like to start and stop a job. I know I don't like it in my work. So much effort coming back up to speed after each delay.
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.
