Kriston

Been Running Hi-Tec + Ceratec Dose every other Oil Change for the last few years and really dont have any lifter noise etc. Very happy with it.

I use Molygen in my X1 and its been great so far.

Asian

Had an exchange with LM rep regarding liechtlauf vs molygen, my main concern was approval vs recommendation.

“The main reason for using an approved oil is to make sure the factory warranty will not be affected but it can be an advantage to use it even later in the life of the vehicle.
Molygen New Generation is not approved (as you pointed out) due to it's high tech and unique additive package that reduces friction inside an engine which was mainly designed to accommodate modified/tuned, track and/or race vehicles. Even so, it will provide proper protection and fulfill all of the specifications necessary for an oil to have the MB229.5 specifications and since we guarantee this to be true, we can safely recommend it for use in your (and other) M156 engine.
The benefits are lower friction which results in lower oil temperatures, less wear, improved efficiency and usually a more quiet engine.
If you feel the need to stay with an approved oil use Leichtlauf High Tech 5W40 which in itslef is a very protective and high quality oil that can be used in day-to-day driving and/or at the race track.”

guess I’m just freaking out over nothing.

swedepat

I use Fuchs(Silkolene) Titan GT1 5w40 ,specs :MB 226.5, MB 229.31
As it is classed to run in dieselengines also, it got more 'cleaning' additives which is good for cleaning the tappet hydraulics.
I also pour in Red Line Additive i posted above to gain ZDDP levels, this to preserve the camshafts.

I got no lifter noice what so ever., nothing, nada, and engine has run slightly above 120000km.(~75000miles)

And bonus, oils classified for diesels are often able to withstand higher cylinderpressures, (forces on the bearings)
Higher filmstrength.

1SickGLC

Could I assume using Molygen or High-Tech in a 5w40 or 0w40 application would in fact be ok to use on my 2018 GLC 43 AMG? I'm almost to my change interval and wanted to use the proper oil. Mobile1 is approved, but know others are great options as well. I have read through the above, but noticed most, if not all were 63 or 63s applications.

BLKROKT

No, you can’t assume anything. Look in your owners manual or ask the GLC450 forum what the correct oil is.

doncmleon

I started using LM earlier this year and absolutely LOVE it. Even the shop who did the oil change IMMEDIATELY commented on how much quieter the car ran. It was very noticeable.

I'll be using MolyGen, along with their Engine Flush now. I bought everything from FCO Euro and they treated me well.

Kriston

Had lunch with a LM rep before the pandemic and he advised to stick with the high tech + ceratec for the m156. The ceratec I can stand by as a long term user, it actually works wonders for lifter noise.

molygen has mos2 as the additive. Do not use molygen + ceratec. It’s a waste. I never ran molygen in the m156, the results with the high tech * ceratec is good enough for me

Jasonoff

The LM High Tech 5W40 thins out at operating temp though (Viscosity at 100 °C 12,9 mm²/s) which makes me wonder how it is at 130 °C

ahering

Just wondering if you are still using Molygen, I just replaced oil on my 2005 E500 and used Molygen 10W30.... do you still like it?

skullbox15

Necroposting here... I had a Indy shop put in some fresh Molygen since they were doing some other work on the car. The guy at the shop said the dye added to this oil makes it acidic which eats the engine parts over time. Not sure I believe that but food for thought.

BLKROKT

So you had them put this oil in anyway after both he and the actual manufacturer said not to run it in our engines?

Fermin Grajales

Molygen is PHENOMENAL. I have been running it in my 2011 W212 E350 4Matic Luxury that gets driven like it's on the Autobahn regularly. Used it for 6.oil changes so far. PRO LINE ENGINE FLUSH and idle for 15 20 minutes with slight reving in between to clean the engine well. PRO LINE GASOLINE SYSTEM CLEANER in the tank after. Car drives like a race car. Smooth as butter sitting on a window sill catching sun rays. Revs great at 6200 RPM's in 2nd gear. Maintains its viscosity better than any other oil I have ever used on cars that were being driven like movie set vehicles from the Mad Max Thunderdome movie. I love this oil. LIQUI MOLY for my W212 only.

roadkillrob

2 things:
1. How much where you paid for this post?
2. Since I created this thread long ago, Molygen 5W40 has been certified as MB 229.5 and is fine to run in the M156.

swedepat

*lol*, working on a novel maybe?

hachiroku

seems like that, "related topics" scroll function caught another member.

W205C43PFL

I wish it was default as off but it can be turned off which I think you are aware, not sure if others do though.

Audi Junkie

amg-avantgarde

Couldn't agree more. That's exactly what I've been running on my 350 for 10 years. Hasn't put a foot wrong. To add, I do combine it with Liqui Moly DI Jectron to clean my injectors.

Audi Junkie

How does someone obtain comparative data about an oil if they have only run one kind, or if they have never done any lab work on it?
I could run Quaker State 10w-40, without a "problem", then insist it's the best, based only on a sample of one. Run your oil, do a lab report, then run Rotella and do the same. Then let me know how your Euro oil is working out, at double the cost.

kafklatsch

I'm on the late show here.... with Johnnie Carson no less

It is interesting that only the 10w-40 molygen is approved for MB 229.5
can someone speculate on why not then the 10w-30 also?

is it actually approved and not "still" just recommended?.....not clear on my web search

I've used the molygen 10w-40 weight for 4 oil changes (2cars) and it is 100% noticeable improvement... versus a very good AMsoil... and 3rd place but still good mobile one..

roadtalontsi

Interested in how much oil consumption you guys see. Strange cars that never consume oil run liqui moly and burn 1-2qts by 5-6000 miles. Im no oil engineer but that doesn't seem normal. Then you switch them back and they dont burn oil. Not sure why but that's been my experience over multiple vehicles and engines. Not a fan. Lots of hype and marketing. I can get liqui moly for much less than just about any other synthetic oil too.

kafklatsch

My oil consumption was/is
1/2 to 3/4 quart per 5k on my m278 with Mobile 1
1/2 with Amsoil
1/4 with molygen (current)... was really blown away by that... I started checking very frequently because it was so little

My S63 is babied and garaged... about 1/2 quart per 5k with Mobile 1... i drive it so little that i havent changed the oil manufacturer

Also did my came adjusters and when the engine was open it looked like new, absolutely zero dark residue or gunk... only clear oily surfaces everywhere... frigging fantastic...that was Mobile one and amsoil... only one use (my first) of molygen at that point..so I won't contribute that condition to the molygen, but who knows..

MB2timer

I am glad that one of our members (kafklatsch) mentioned amsoil. Nothing against it, I have heard strong support for it, and really no bad mouthing of the product that I have ever seen. So it’s probably very good. But is it the best? It seems like after seeing some of the measurements and data already mentioned in the thread, it should be more objective, than subjective to say which is the best.
It looks to me like the tungsten based product has a lot of advantages over the molybdenum based additives.
I just like the idea of the fluid inside the engine protecting and preserving the engine, instead of the engine wearing itself out for lack of a sacrificial lamb so to speak.

Audi Junkie

No, it is not approved nor will it be since it's extra additives create extra deposits, which are strictly limited by Mercedes.

https://www.infineuminsight.com/medi...-pages-002.pdf

https://pim.liqui-moly.de/pdf/en_GB/liqui/35/P001759

What are your goals running this oil? Have you done any lab work to ascertain problematic wear rates, or...?

Audi Junkie

I would run Mobil 1 High Miles 10w-40 unless it's cold, then add some 5w-30 to it.