Marvel Mystery Oil
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Joined: Oct 2018
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S550
Marvel Mystery Oil
Back in the 70's and 80's, I used Marvel Mystery Oil on all of my cars. (Oil additive as well as gas additive). Never had a problem with any of this cars. My 08 S 550 has 134,000 on the clock.
Anyone have any experience with this stuff in an S550?
Any opinions GREATLY appreciated. (As an aside, I have been reading through the over 500 reviews on amazon with 92% of the reviews being either 4 or 5 stars. See the URL if you have any interest.
Anyone have any experience with this stuff in an S550?
Any opinions GREATLY appreciated. (As an aside, I have been reading through the over 500 reviews on amazon with 92% of the reviews being either 4 or 5 stars. See the URL if you have any interest.
Last edited by Bklyn; Jun 23, 2019 at 10:32 PM.
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Joined: Oct 2007
Posts: 643
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From: Southern California
2007 CL550
Recent Mercedes owner manuals state "! Do not use any additives in the engine oil. This could damage the engine." Some older manuals state that engine warranty is void if oil additives are used. Most, if not all, of the reviews are not based to scientific data, they are simply opinions. The ones that claim it really works are for vehicles built prior to 2000 which had mush looser tolerances and did not use synthetic oil.
Only use synthetic oil that meets Mercedes 229.5 specification such as Mobil 1. See https://bevo.mercedes-benz.com/bevolisten/229.5_en.html for a listing of all approved motor oils for your vehicle.
Use only toptier gasoline with no additional additives. See https://toptiergas.com/licensed-brands/
Under no circumstances add this product to your gasoline unless you are prepared to spend over a thousand dollars when i ruins your catalytic converter!
Techron can be used as a fuel additive if you are experiencing rough idle due to dirty fuel injectors which is extremely rare if you have been using toptier gas.
Only use synthetic oil that meets Mercedes 229.5 specification such as Mobil 1. See https://bevo.mercedes-benz.com/bevolisten/229.5_en.html for a listing of all approved motor oils for your vehicle.
Use only toptier gasoline with no additional additives. See https://toptiergas.com/licensed-brands/
Under no circumstances add this product to your gasoline unless you are prepared to spend over a thousand dollars when i ruins your catalytic converter!
Techron can be used as a fuel additive if you are experiencing rough idle due to dirty fuel injectors which is extremely rare if you have been using toptier gas.
Last edited by steveb9771; Jun 24, 2019 at 12:43 AM.
Thread Starter
Member
Joined: Oct 2018
Posts: 249
Likes: 19
S550
Recent Mercedes owner manuals state "! Do not use any additives in the engine oil. This could damage the engine." Some older manuals state that engine warranty is void if oil additives are used.
Only use synthetic oil that meets Mercedes 229.5 specification such as Mobil 1. See https://bevo.mercedes-benz.com/bevolisten/229.5_en.html for a listing of all approved motor oils for your vehicle.
Use only toptier gasoline with no additional additives. See https://toptiergas.com/licensed-brands/
Under no circumstances add this product to your gasoline unless you are prepared to spend over a thousand dollars when i ruins your catalytic converter!
Techron can be used as a fuel additive if you are experiencing rough idle due to dirty fuel injectors which is extremely rare if you have been using toptier gas.
Only use synthetic oil that meets Mercedes 229.5 specification such as Mobil 1. See https://bevo.mercedes-benz.com/bevolisten/229.5_en.html for a listing of all approved motor oils for your vehicle.
Use only toptier gasoline with no additional additives. See https://toptiergas.com/licensed-brands/
Under no circumstances add this product to your gasoline unless you are prepared to spend over a thousand dollars when i ruins your catalytic converter!
Techron can be used as a fuel additive if you are experiencing rough idle due to dirty fuel injectors which is extremely rare if you have been using toptier gas.
Senior Member
Joined: Dec 2018
Posts: 285
Likes: 60
From: New York
2010 E350 4Matic sedan
See attached doc from MB, I know it’s old but the only non-MB fuel additive that MB recommends is Techron. The W221 is part of the list on page 15.
Last edited by pb39374; Jun 24, 2019 at 07:22 PM.
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AUDI Q7
Back in the 70's and 80's, I used Marvel Mystery Oil on all of my cars. (Oil additive as well as gas additive). Never had a problem with any of this cars. My 08 S 550 has 134,000 on the clock.
Anyone have any experience with this stuff in an S550?
Any opinions GREATLY appreciated. (As an aside, I have been reading through the over 500 reviews on amazon with 92% of the reviews being either 4 or 5 stars. See the URL if you have any interest. https://www.amazon.com/Marvel-Myster...ct_top?ie=UTF8
Anyone have any experience with this stuff in an S550?
Any opinions GREATLY appreciated. (As an aside, I have been reading through the over 500 reviews on amazon with 92% of the reviews being either 4 or 5 stars. See the URL if you have any interest. https://www.amazon.com/Marvel-Myster...ct_top?ie=UTF8
chirboiz,
Bob
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Joined: Jun 2020
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'11 E350, '11 E550, '98 M3, '95 E320
Meh... light oil and naphtha, like older SeaFoam variety. Newer SeaFoam contains PEA, which is actually a proper cleaner as found in Techron among others.
A relic from carb days... I’ll use SeaFoam in small engines. Cars get Techron, BG, Redline or Gumout.
A relic from carb days... I’ll use SeaFoam in small engines. Cars get Techron, BG, Redline or Gumout.
Super Member
Joined: Jun 2013
Posts: 804
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From: Staten Island, NY
2010 MB S550, 2017 MB SLC 300
I was using MMO as recently as this past spring. It's basically suped up tranny fluid. I use it if the power steering fluid is low in any of my trucks or vans. I would put half a bottle in the fuel tank of my old Freightliners with 3126 CAT motors. It always cleaned them out really well, and I would put the other half in the crankcase the day before an oil service. I got over 650,000 miles out of both those engines and they still run. They outlasted the trucks that they were in which was very unusual for a CAT 3126.
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Joined: Aug 2014
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S500
oils have moved many many leap years in the last 15 years
and worse manufacturers have moved to fun and games
this is not BS its fact, Manu now build cars with various components that ONLY cope with the oils they recco - they idea its to catch you out and make it fail faster
to stop u guys taking them to court they have wrapped it up in BS stop start needs, and in the need to move forward on longevity of the emissions system components
if you add old world clever stuff it will cause harm to a modern engine - manu recco full specification or don't drive it
and worse manufacturers have moved to fun and games
this is not BS its fact, Manu now build cars with various components that ONLY cope with the oils they recco - they idea its to catch you out and make it fail faster
to stop u guys taking them to court they have wrapped it up in BS stop start needs, and in the need to move forward on longevity of the emissions system components
if you add old world clever stuff it will cause harm to a modern engine - manu recco full specification or don't drive it
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Joined: Jun 2020
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04 E55 AMG (totaled), 07 S550 4Matic, 14 E63S
I wouldn't use MMO as an oil additive but I would consider using it as a flush in certain situations. It's a great engine fogger and does a lot of other cool stuff, too. MMO is good to have on hand if you tinker with really any kind of machinery...
Member
Joined: Feb 2023
Posts: 82
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From: Suburban Chicago in Illinois
2024 GLC-300 & 2022 GLE-350
My Uncle Paul got me started putting a little "Marvel Mystery Oil" in my Gas and Crankcase when I was still in high-school. (late 1970's)
He fell in love with it during World War II (Fighter Pilot). Air Force mechanics made sure to put it in the plane crankcases. If the engine took a bullet and lost its oil, the Marvel Mystery Oil would provide enough coating to keep the engine running long enough for a landing, instead of seizing up in mid flight.
I put a little MMO in the gas of our (me and the wife's) GLE350 and GLC300 periodically, and in the oil at 5,000 miles(mid oil-change). And in countless owned cars before these two. So do our adult sons. No engine or fuel system problems for any of us...ever. Knock on wood.
Allen in Chicagoland
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2006 W221 S500L M273
Lubrication is a big part of developing engines and Mercedes and all the other carmakers have many many engineers looking into it.
I guarantee they already looked at all the ingredients of all the popular additives and added it to their oil spec where applicable.
I guarantee they already looked at all the ingredients of all the popular additives and added it to their oil spec where applicable.
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From: Occupied Palestine
2025 Maserati Grecale Folgore and 2024 Jaguar F-PACE SVR
I think as a general rule most people should stay away from them. But even in video above guy says Lucas increased viscosity and Marvell lowered it. I know I've used Lucas anti-slip stuff in old worn out transmissions a few times and it increased the viscosity of the old fluid and renewed the depleted additive package without risking a full flush. And Marvell probably would help remove some extra sludge if used before an oil change. Some guys even swear using Seafoam to clean intake valve carbon deposits out of DI engines works almost as good as walnut shell blasting. So I wouldn't call them a scam, just don't believe all the "snake oil salesman" hype... cures all automotive ailments, pour in all orifices. LOL
Last edited by GreasedFolgore; May 17, 2024 at 04:50 PM.
