CptSteve

First I have read a number of the awesome threads on engine oil and over the years it seems the opinion has slightly changed from M1 0w40 to other options like M1 5w40 or T6 Rotella or Liquimoly LEICHTLAUF 5w40

My questions are as follows for a primarily weekend car moderate driving on the M156 engine

1. For a low km c63 is 0w40 still the best?
2. Has anyone done an analysis on how 0w40 compares vs T6 Rotella or Liquimoly LEICHTLAUF 5w40?
3. Thoughts on 0w40 or 5w40 Molygen (the green oil from Liquimoly) - is Molygen just hype?
4.Opinion now seems to be in favour of using CERATEC for our M156 engines - does anyone know how Ceratec interacts with the additive package in M1 products?
5. I watched a video from Liquimoly advising Molygen should NOT be mixed with CERATEC but is fine for Leichtlauf (purple bottle) variants - anyone know why?

Thanks
CS

PeterA90

CptSteve

Lol...yes I did.

I have read the posts by Diabolis and others...but a number of those posts were a few years back before the newer Liquid Moly (Molygen) entered the market and there is very limited literature about Molygen hence my question..particularly wrt its interaction with CERATEC

There was also a BITOG reference to an article titled “540 RAT – Tech Facts, NOT Myths
June 20, 2013, MOTOR OIL ENGINEERING TEST DATA” which was kinda critical on Shell and Liquid Moly lineups but that was back in 2013...

Are you saying someone has done an analysis on Molygen vs M1 0w40? If yes can you please link it?

BLKROKT

CptSteve

None of those threads contains the analysis I am after...and yes I have read every one before posting and did use the search function.

BLKROKT if you have no FACTS to add to the thread please don’t post your usual antagonistic stuff, thanks.

BLKROKT

Go get fuked calling me antagonistic.

THIS thread - from the above list I tried to help you with - has what you’re looking for ahole.

https://mbworld.org/forums/c63-amg-w...-best-oil.html

Or go look on BITOG. Jackass.

CptSteve

1. Dude you need to take a chill-pill.
2. I read that post before I even started my thread...
3. Whilst the information provided by Skratch was informative the conclusions reached seemed to be that the the lower engine oil temps observed could not automatically lead to the conclusion that the Molygen was “working better”
4. I’m not sure If I agree entirely with that post but agree you can have a high engine temp whilst that heat is not being reflected in the oil temp.
5. That thread is nearly a year old so heaps of ppl could have tried Molygen since then...
6. What I was ideally after was:
6.1 A black stone style report on the Molygen.
6.2 A report or analysis similar to the 540 Rat findings on Molygen (wear protection, shear resistance etc etc). Something a bit more than “yea it feels great”.

Also if you were genuinely interested in assisting you would have just posted the link to the thread that you thought could have helped, instead of first liking a meme telling me to search and then doing a screenshot of the “search” and then (at the third intervention) posting a link.

You pretty much swing the “search bat” at every person asking for advice so quit the knee-jerk antics, thanks.

BLKROKT

There’s a Blackstone UOA on Molygen, IN THAT THREAD, genius.

CptSteve

How do you conclude that what Skratch posted is a Blackstone UOA? He makes it clear that was info he found online....could be from a Honda Civic all we know..

I might just run Molygen for a bit and post one myself and my thoughts.

bhamg

OP - If you're going the 5w-40 route I'd recommend the Motul X-cess as opposed to the Molygen. The X-cess is a tried and proven formula and my choice for a 5w-40 in the M156. IMO it's a fantastic oil. That said, because of a change in the type of driving that I'm doing I've switched back to a 0w-40. I used M1 in the past with great results and am on my third change with PP 0w-40. If you look at the UOAs in the link below you'll see that the M1 and the PP are virtually identical. In that vehicle (Honda) both oils delivered great results and as you can see the formulas are practically the same. It's those levels of the various additives that are smack dab in the sweet spot for what works great in the M156 also. It's a generic formula that you'll find in many MB-approved oils and for good reason - it works. No need to stray from what has been proven to deliver excellent results (except perhaps to add some MoS2 - highly recommended).

https://www.bobistheoilguy.com/forum...si#Post5175530

Jasonoff

CptSteve

Hey mate thats great advice - I was hesitant about Motul because a couple of the oil threads were critical about them being a smaller company less RND etc etc but that UOA (from what I’m learning) seems decent, I am curious whether the nature of the M156 layout causes oil X to be better than oil Y. Again best way forward is to just log my own analysis - thanks again

bhamg

i took a look at the Molygen VOA as referenced above. I had forgotten what I didn't care for about it the first time I saw it and realized it had to do with expecting to see a dose of titanium and being disappointed there was none. The formula looks perfectly fine though...maybe you should give it a try after all. There's a respectable dose of moly already, I'd skip the MoS2 and do a UOA around 6-7.5k miles for the first baseline.