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Anyone install dual catch cans for RMS leak prevention?
Hi all, it’s been 6 weeks since I’ve owned my 2018 E63S Wagon and I’m loving it. I am tuned stage 2 with catless downpipes and not looking forward to encountering the RMS issue.
I came across this dual catch can offered by 63 Motorsports, which they claim prevents the source of the issue with respect to the oil separators. Anyone have them installed and can share feedback?
I have.
Had them installed for 3 months now and driven 3k miles or so with them on.
Cons:
Poor packaging when they ship. I have mentioned this different forums/FB.
Emptying them sucks majorly and you will want to buy a manual pump fluid extractor from amazon.
Pros.
They catch a lot of oil so yeah it does what its intended.
I have a Radiator leak and when I asked a shop to check for other leaks, especially oil pertaining to RMS. There was no leaks and still no oil leaks under my car.
I'd say its doing its job. (knock on wood). Go for it.
I have.
Had them installed for 3 months now and driven 3k miles or so with them on.
Cons:
Poor packaging when they ship. I have mentioned this different forums/FB.
Emptying them sucks majorly and you will want to buy a manual pump fluid extractor from amazon.
Pros.
They catch a lot of oil so yeah it does what its intended.
I have a Radiator leak and when I asked a shop to check for other leaks, especially oil pertaining to RMS. There was no leaks and still no oil leaks under my car.
I'd say its doing its job. (knock on wood). Go for it.
can you elaborate on difficulty to empty the cans? Is it just impossible to disconnect due to limited space or a flawed design?
Just very very annoying. Comes with a syringe. This means one pull that your hoping to extract oil from a long tube thats connected at the bottom of the can which is fighting all sorts of gravity and length.
Limited space in our engine bay obviously plays a large role.
Buy this in addition and use it to pump and its fine after that.
I'm presuming those two people who installed or will install these cans have the old RMS and OVS parts installed (old part numbers)?
That would be the best evidence if an RMS leak is abated with these cans (despite how limited the data is as it stands)
sadly we don't know the real prevalence of the RMS leaks across the board to know if these cans are worth it but I can understand dropping $1500 to find out if you don't have an extended warranty
Last edited by PeterUbers; Aug 13, 2025 at 07:45 PM.
2014 Jeep Grand Cherokee SRT (sold) 1993 Mazda RX7 (sold)
Originally Posted by PeterUbers
I'm presuming those two people who installed or will install these cans have the old RMS and OVS parts installed (old part numbers)?
That would be the best evidence if an RMS leak is abated with these cans (despite how limited the data is as it stands)
sadly we don't know the real prevalence of the RMS leaks across the board to know if these cans are worth it but I can understand dropping $1500 to find out if you don't have an extended warranty
$1500 is a pretty penny to drop for "hopeful" avoidance of a RMS leak, buuuuut, since Fidelity and others have ceased offering coverage for our E63s it could be very well worth the cost.
$1500 is a pretty penny to drop for "hopeful" avoidance of a RMS leak, buuuuut, since Fidelity and others have ceased offering coverage for our E63s it could be very well worth the cost.
I may have to jump on this bandwagon.
Mike
So, the one company that gets thrown around here the most for aftermarket warranty is not doing it anymore?
Catch Cans - $1,500 before tax/shipping + install will be $2300 maybe more or less
Failure and having to go either indy to fix or stealership = from numbers ive seen thrown around here = $6K minimum.
So, the one company that gets thrown around here the most for aftermarket warranty is not doing it anymore?
correct; but GWC/easy care still covering 2021+ AMG e63S
Catch Cans - $1,500 before tax/shipping + install will be $2300 maybe more or less **fair and you have to maintain the cans and the oil within them periodically and no guarantee these will solve anything - one report by one installer doesn't offer much but it's a start
Failure and having to go either indy to fix or stealership = from numbers ive seen thrown around here = $6K minimum.
and so far no repeat fails with new parts; and the work and parts usually comes with some type of warranty which the catch cans will not in terms of guaranteeing no leaks after catch cans installed
see above
Last edited by PeterUbers; Aug 14, 2025 at 01:37 AM.
$1600 in the grand scheme of things isn't that much in the E63s world, esp for a "maybe" potential RMS solution. I have run the a billet UPR CC on all of my Ecoboost enignes, and the CC catches quite a bit of oil. When I receive my 63 CC's I will do a dedicated Quality/Install/Usage post. I change my oil every 3k miles, because of running E30. In the next couple of weeks I will install the cans. I do have to take my E63 to the dealership for an oil change and spark plug change as well. That will allow me to get on a schedule with oil changes and checking how much come out of the cans every 3k miles. Also being modified and tuned will check that box too.
Couple of interesting points (maybe) from my perspective... Purchased a 2018 E63S Wagon 5/2/25 with 20k miles, now at 21.5k miles, have 72 month Platinum warranty.
#1 catch can is a known device/system. It's not a bad thing. No matter what, its going to help something. But it may void a warranty, strangely. It's a great preventative device/system if you have older separators and NO warranty, but as others have said, that's anecdotal at this point.
#2 I opted to NOT purchase/install BECAUSE I have a warranty that will cover the RMS so I didn't need a potentially preventative device that may void the repair I'm seeking to avoid.
#3 it's definitely overpriced. During my research it went on sale, no particular reason given, just a few sets at a MUCH lower price point, ~$1000 iirc and I still didn't buy it. Mostly because of #2/warranty but also because if a $1600 item goes on sale for $1000. That means it's an OLD offering and new one will be coming, unlikely on this case but I have no idea, OR.... IT SIMPLY ISN'T WORTH the asking price and isn't selling so they need to move units. I do believe some people here got it at the lower price but they can chime in.
PFA
Last edited by BRGR TME; Aug 14, 2025 at 01:09 PM.
Couple of interesting points (maybe) from my perspective... Purchased a 2018 E63S Wagon 5/2/25 with 20k miles, now at 21.5k miles, have 72 month Platinum warranty.
#1 catch can is a known device/system. It's not a bad thing. No matter what, its going to help something. But it may void a warranty, strangely. It's a great preventative device/system if you have older separators and NO warranty, but as others have said, that's anecdotal at this point.
#2 I opted to NOT purchase/install BECAUSE I have a warranty that will cover the RMS so I didn't need a potentially preventative device that may void the repair I'm seeking to avoid.
#3 it's definitely overpriced. During my research it went on sale, no particular reason given, just a few sets at a MUCH lower price point, ~$1000 iirc and I still didn't buy it. Mostly because of #2/warranty but also because if a $1600 item goes on sale for $1000. That means it's an OLD offering and new one will be coming, unlikely on this case but I have no idea, OR.... IT SIMPLY ISN'T WORTH the asking price and isn't selling so they need to move units. I do believe some people here got it at the lower price but they can chime in.
PFA
yep - Excellent points particularly that this would be ideal for those not under any warranty consider it may void your current warranty. But ironically if the cans are going to work they need to be installed as soon as possible in the life of the engine.
catch cans have proven themselves in the industry, that is not under scrutiny.
can these catch cans from this company avert RMS LEAKS in the 213 amg, given that MB has updated the OVS and RMS parts recognizing their previous iteration deficits?
Looking forward to more data posted.
Last edited by PeterUbers; Aug 14, 2025 at 01:27 PM.
yep - Excellent points particularly that this would be ideal for those not under any warranty consider it may void your current warranty. But ironically if the cans are going to work they need to be installed as soon as possible in the life of the engine.
catch cans have proven themselves in the industry, that is not under scrutiny.
can these catch cans from this company avert RMS LEAKS in the 213 amg, given that MB has updated the OVS and RMS parts recognizing their previous iteration deficits?
Looking forward to more data posted.
I can actually be kind of the control.
My E63's had an upper pan gasket leak when I purchased it. The dealer fixed it, and when they were in there saw that my RMS was seeping. Since they were there, they replaced it at 36k miles. They did do the test of the OVS and they came back "good". However, if the RMS was seeping, then how good were the OVS working? So I had my RMS replaced, but not the the OVS. That was 9k ish miles ago, and since then my car has been modified and tuned.
I do have an extended 3 year 36 mile warranty through another company not represented on the boards. I have roughly 2 years and 27k miles left.
I have an appointment with my local MB dealership for Monday the 18th. Car is getting an oil change, new spark plugs, and I asked them to run the diagnostic test of the OVS as well. We will see what they come back with.
I will install the 63 CC's when I get the car back, and we can go from there.
My E63's had an upper pan gasket leak when I purchased it. The dealer fixed it, and when they were in there saw that my RMS was seeping. Since they were there, they replaced it at 36k miles. They did do the test of the OVS and they came back "good". However, if the RMS was seeping, then how good were the OVS working? So I had my RMS replaced, but not the the OVS. That was 9k ish miles ago, and since then my car has been modified and tuned.
I do have an extended 3 year 36 mile warranty through another company not represented on the boards. I have roughly 2 years and 27k miles left.
I have an appointment with my local MB dealership for Monday the 18th. Car is getting an oil change, new spark plugs, and I asked them to run the diagnostic test of the OVS as well. We will see what they come back with.
I will install the 63 CC's when I get the car back, and we can go from there.
I appreciate the objectivity- looking forward to your feedback - it could help many many m17x owners dealing with Rms issues in the future
I appreciate the objectivity- looking forward to your feedback - it could help many many m17x owners dealing with Rms issues in the future
No problem. I like data. I just got confirmation from DHL that the catch cans should arrive on Monday the 18th, Once the car is back, I will install them, and we will see what happens.
I received the cans last Friday. They were packed well. Car is still at Mercedes. Oil change and plugs went well. However, I have two coils that are not happy. Told them to replace them. Then I was told I have a leaking valve cover that is dripping directly into a spark plug hole. Anyone care to take a gander at how much that fix is? VCG replace and reseal. Enough for me to refer them to my extended warranty company, who graveled over their shop rate (I have to pay the difference in labor rate), but approved the repair.
For a motor that only has 46k miles, I am really disappointed in the seals and gaskets with this platform.
I received the cans last Friday. They were packed well. Car is still at Mercedes. Oil change and plugs went well. However, I have two coils that are not happy. Told them to replace them. Then I was told I have a leaking valve cover that is dripping directly into a spark plug hole. Anyone care to take a gander at how much that fix is? VCG replace and reseal. Enough for me to refer them to my extended warranty company, who graveled over their shop rate (I have to pay the difference in labor rate), but approved the repair.
For a motor that only has 46k miles, I am really disappointed in the seals and gaskets with this platform.
the coils remain a weak point for the m17X as they were for the m157. At least a simple fix (if they're in stock)
dang - valve cover eh? I've read one or two other people with that issue on this platform. It's so hard to estimate a cost since dealers can be all over the place, but usually very north $$ of independent mechanics.
What did they think of your OVS? You had them test it. And you have the updated RMS part?
Last edited by PeterUbers; Aug 20, 2025 at 09:49 AM.
the coils remain a weak point for the m17X as they were for the m157. At least a simple fix (if they're in stock)
dang - valve cover eh? I've read one or two other people with that issue on this platform. It's so hard to estimate a cost since dealers can be all over the place, but usually very north $$ of independent mechanics.
What did they think of your OVS? You had them test it. And you have the updated RMS part?
The coils...if Mercedes know they are a problem, then they shouldn't jack the price of them up.
Mercedes Scottsdale (The only AMG Performance Center in AZ) charges $290 a hour. Alpha Warranty only covers $210 an hour so I have to pay the difference.
The OVS tested good. I do have the updated RMS part.
It is just super disappointing that this car will have almost 10K in repairs to leaking gaskets. An upper oil pan gasket, a valve cover gasket (roughly 10k for both). Add in $5600 for an effing headlight, plus $2700 for a windshield....all in 11 months. All covered by insurance or warranty, but geez......
If I ever go with another 63 series AMG and I will probably only lease one in the future at this rate.
The coils...if Mercedes know they are a problem, then they shouldn't jack the price of them up.
Mercedes Scottsdale (The only AMG Performance Center in AZ) charges $290 a hour. Alpha Warranty only covers $210 an hour so I have to pay the difference.
The OVS tested good. I do have the updated RMS part.
It is just super disappointing that this car will have almost 10K in repairs to leaking gaskets. An upper oil pan gasket, a valve cover gasket (roughly 10k for both). Add in $5600 for an effing headlight, plus $2700 for a windshield....all in 11 months. All covered by insurance or warranty, but geez......
If I ever go with another 63 series AMG and I will probably only lease one in the future at this rate.
Damn dude - this is my first AMG and I'm aware that it stands for All Money Gone. I got 2 years of warranty left and I'll either dump mine or look for an extended warranty. I do enjoy the vehicle a lot just a **** ton of tech on them that can blow up and it's impossible to do most of this stuff yourself. Too technical for an average joe.
It is just super disappointing that this car will have almost 10K in repairs to leaking gaskets. An upper oil pan gasket, a valve cover gasket (roughly 10k for both).
This is labor + parts?
Do you have part number for these gaskets? Can't easily find these
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