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w116 300sd Mercedes oil recommendation #4694354
03/14/18 09:11 AM
03/14/18 09:11 AM
Joined: Aug 2009
Posts: 677
CA
Gito Offline OP
Gito  Offline OP
Joined: Aug 2009
Posts: 677
CA
It's time to buy oil for my 1979 300sd (w116) with approximately 120k miles.

I've been hearing that Chevron Delo 400 changed their formula awhile back.
I'm not sure exactly when they changed the formula but now that I'm aware about this, I would like to get some updates.

The other day I saw that Orielly had Chevron Delo 400LE on sale for 13.99. Not bad, but should I still be using Delo.
I have read on other forums that Chevron Delo 400 was the good stuff but no longer available. Note: 400 without the LE.

I want to make sure that I'm using the right motor oil.

Any advice is greatly appreciated

Re: w116 300sd Mercedes oil recommendation [Re: Gito] #4694399
03/14/18 09:57 AM
03/14/18 09:57 AM
Joined: Jun 2003
Posts: 17,506
Deplorable in apple valley, ca
Chris142 Offline
Chris142  Offline
Joined: Jun 2003
Posts: 17,506
Deplorable in apple valley, ca
Any 15w40 will do. My friend that loves those cars and is on the Benz forums likes Walmart super tech.


02 Wrangler durablend 10w40
87 F250 traveler 15w40
04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40
Re: w116 300sd Mercedes oil recommendation [Re: Gito] #4694535
03/14/18 12:11 PM
03/14/18 12:11 PM
Joined: Jan 2004
Posts: 4,249
California
nthach Offline
nthach  Offline
Joined: Jan 2004
Posts: 4,249
California
The older Mercedes diesels/gassers do fine on 15W-40.

Re: w116 300sd Mercedes oil recommendation [Re: Gito] #4694577
03/14/18 12:44 PM
03/14/18 12:44 PM
Joined: Aug 2009
Posts: 677
CA
Gito Offline OP
Gito  Offline OP
Joined: Aug 2009
Posts: 677
CA
So 15-40 Supertech is fine? How is that compared to 15-40 Chevron Delo 400LE? Can I use Shell Rotella T-6 Syn?

Re: w116 300sd Mercedes oil recommendation [Re: Gito] #4694596
03/14/18 01:02 PM
03/14/18 01:02 PM
Joined: Dec 2002
Posts: 42,158
New Jersey
JHZR2 Offline
JHZR2  Offline
Joined: Dec 2002
Posts: 42,158
New Jersey
A lot of us that are hardcore into MB diesels use 5w-40...

I run Schaeffer's 5w-40 in one, Rotella 5w-40 in the other.

I run Schaeffers because I had bought it in bulk long ago, and it gets two year OCIs. The other that gets more use gets Rotella.

15w-40 will run just fine in these engines. 5w- just cranks faster/easier in all conditions. Given the price point that 5w-40 has gotten to, I see no reason to not use it...

Re: w116 300sd Mercedes oil recommendation [Re: Gito] #4694629
03/14/18 01:37 PM
03/14/18 01:37 PM
Joined: Nov 2006
Posts: 20,150
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,150
MA, Mittelfranken.de
While 15w40 might be fine time has moved on, today it is rarely used in Germany anymore for these engines now its mostly 5w40 Mobil recommends a 5w50. These are Euro oils and usually have a higher zinc content.
I suspect this engine may need a zinc additive with newer US oils as that seems to be the most reduced component. Some will say it doesn't have stiff valve springs as an automatic disclaimer for low zinc content but personally I don't buy it.

2cents


ASE L1, Master. Deutsch Meisterbrief.
Re: w116 300sd Mercedes oil recommendation [Re: Gito] #4694672
03/14/18 02:46 PM
03/14/18 02:46 PM
Joined: Sep 2015
Posts: 5,955
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 5,955
Kalifornia Kollective
If it's overhead cam, it does not need more than 800 PPM ZDDP. And Chevron now claims 50% less wear with their new oil. That could be grounds for class action law suites if they fail to live up to it ...

They have replaced ZDDP with newer organic chemistry that does not show up on typical UOA's ... I'll bet their new formulations have been severely lab and field tested and they are on top of it smile


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: w116 300sd Mercedes oil recommendation [Re: Gito] #4694687
03/14/18 03:12 PM
03/14/18 03:12 PM
Joined: Dec 2011
Posts: 65
Gardnerville, Nv
390pi Offline
390pi  Offline
Joined: Dec 2011
Posts: 65
Gardnerville, Nv
Yes, 5w40.

I remember reading a technical article from George Murphy, who was MBZ technical editor IIRC, about timing chain and guide wear with synthetic and non-synthetic oil and what he had observed in engine teardowns of OM616 and OM617 MBZ motors.

He observed that synthetic oil motors had less chain and guide wear.

I still have an '82 240D and run syn 5W40.


2015 Ram 2500 4x4 6.7L CTD
2015 Jeep Grand Cherokee 3.0 Diesel
2016 Jeep Grand Cherokee 3.6
2000 Chev Suburban 2500 6.0

Re: w116 300sd Mercedes oil recommendation [Re: BrocLuno] #4694792
03/14/18 05:07 PM
03/14/18 05:07 PM
Joined: Nov 2006
Posts: 20,150
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,150
MA, Mittelfranken.de
Originally Posted By: BrocLuno
If it's overhead cam, it does not need more than 800 PPM ZDDP. And Chevron now claims 50% less wear with their new oil. That could be grounds for class action law suites if they fail to live up to it ...

They have replaced ZDDP with newer organic chemistry that does not show up on typical UOA's ... I'll bet their new formulations have been severely lab and field tested and they are on top of it smile


Cam lobe over bucket or shim I agree but as soon as non roller rocket arms or flat tappets come into the equation having extra zinc in the mix at least 1100 ppm seems to keep them in the best condition. To each their own, you want believe different that's fine too.

https://www.hemmings.com/blog/2012/10/18/tech-101-zinc-in-oil-and-its-effects-on-older-engines/


ASE L1, Master. Deutsch Meisterbrief.
Re: w116 300sd Mercedes oil recommendation [Re: JHZR2] #4696405
03/16/18 08:01 AM
03/16/18 08:01 AM
Joined: Aug 2009
Posts: 677
CA
Gito Offline OP
Gito  Offline OP
Joined: Aug 2009
Posts: 677
CA
Originally Posted By: JHZR2
A lot of us that are hardcore into MB diesels use 5w-40...

I run Schaeffer's 5w-40 in one, Rotella 5w-40 in the other.

I run Schaeffers because I had bought it in bulk long ago, and it gets two year OCIs. The other that gets more use gets Rotella.

15w-40 will run just fine in these engines. 5w- just cranks faster/easier in all conditions. Given the price point that 5w-40 has gotten to, I see no reason to not use it...


Where is Schaeffer's 5w-40 sold?
In store or online?

Re: w116 300sd Mercedes oil recommendation [Re: Gito] #4697023
03/16/18 07:36 PM
03/16/18 07:36 PM
Joined: Aug 2009
Posts: 677
CA
Gito Offline OP
Gito  Offline OP
Joined: Aug 2009
Posts: 677
CA
Is Amsoil Heavy-Duty Synthetic Diesel Oil 5W-40 appropriate for my OM617.950?


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