Mercedes-Benz Forum banner

1 - 20 of 35 Posts

·
Registered
Joined
·
36 Posts
Discussion Starter #1
On a 1991 300E with a 3.0 motor, what would be the correct oil?
I've always used Mobil 1 0W40, is this advisable being that I live in Miami Beach where temps rarely get into the 50s?
Is Rotella 15W40 too thick for this motor?
Thanks in advance.
 

·
Registered
'95 E300 DIESEL, '91 600SEL, '92 600SEL
Joined
·
17,158 Posts
Chevron Delo400 (available at Costco) or Shell Rotella T in 15W-40 NON-synthetic are the ideal grade oils for these motors, and that is what they left the factory with.
 

·
Outstanding Contributor
'85 300D Turbo, '91 420SEL, '92 190E 2.6, '09 C350, '12 E63 Wagon
Joined
·
3,166 Posts
The 0W just means if you ever bring it somewhere COLD it will not be an issue. It does not mean it is too thin, in any ambient temperature.

Sent from my moto g(7) power using Tapatalk
 

·
Registered
'95 E300 DIESEL, '91 600SEL, '92 600SEL
Joined
·
17,158 Posts
Keep in mind that the W124 are pre-FSS era vehicles, and the use of synthetic oil does pretty much nothing but to lighten the wallet.

What IS far more important is to check the ZDDP content of the oil you intent to use, as ZDDP is the main lubricating additive that these engines require and is becoming rare in modern day oils.

If in doubt what to use, refer to MB's own Bevo lists which contains oils that are tested and certified by MB.

 

·
Outstanding Contributor
'85 300D Turbo, '91 420SEL, '92 190E 2.6, '09 C350, '12 E63 Wagon
Joined
·
3,166 Posts
I'm going to have to verify the addendum we received with our W126 when we got it, but IIRC the sheet # is 229.5. Mobil 1 FS 0W-40 and the older plain Mobil 1 0W-40 are/were perennials on the list. Interesting factoid is that the plain old 0W-40 is on Porsche's A40 list for maybe a couple more years, even though discontinued and no longer supported by Mobil.

Mobil .PDF says Phosphorous is at 1000 PPM and Zinc is at 1100 PPM for the FS, pretty healthy numbers as far as I know.

It may not be necessary for these older models, but I put my faith in synthetics higher level of protection vs conventional.

Sent from my moto g(7) power using Tapatalk
 

·
Premium Member
1993 300CE Cabriolet (mine) ; 1994 E320 Wagon (wife's) ; 1990 Benz 300E 2.6 (son's)
Joined
·
7,034 Posts
What IS far more important is to check the ZDDP content of the oil you intent to use, as ZDDP is the main lubricating additive that these engines require and is becoming rare in modern day oils.
sadly, the newest spec diesel oils are no longer high ZDDP as thats not compatible with the urea additive ('blutech' etc) systems on modern diesels.

I don't have it in front of me, but I found the numbers for both older and current Delo400 on, I think, bobstheoilguy... the prior spec was high ZDDP but the new stuff isn't.
 

·
Outstanding Contributor
'85 300D Turbo, '91 420SEL, '92 190E 2.6, '09 C350, '12 E63 Wagon
Joined
·
3,166 Posts
So I got my "FACTORY APPROVED SERVICE PRODUCTS" and scanned it for you all. Sorry if it's sideways it is front and back 8 but folded like an accordion. Looks like the old sheet number was 226.5! I believe if you search 2007 Mercedes Factory Approved Fluids a MBWorld thread will pop up with it for you to download the booklet of that year. If you flip through that it will show that 229.5 is the new sheet number, again if I recall correctly.

An interesting note is that under "MULTI-GRADE ENGINE OILS (Sheet No. 226.5)" "Mobil 1" is there, all the way back in 1991. In the 2007 booklet for 229.5 Mobil 1 is also there, and 0W-40 is still there today...
 

Attachments

·
Registered
'95 E300 DIESEL, '91 600SEL, '92 600SEL
Joined
·
17,158 Posts
So I got my "FACTORY APPROVED SERVICE PRODUCTS" and scanned it for you all. Sorry if it's sideways it is front and back 8 but folded like an accordion. Looks like the old sheet number was 226.5! I believe if you search 2007 Mercedes Factory Approved Fluids a MBWorld thread will pop up with it for you to download the booklet of that year. If you flip through that it will show that 229.5 is the new sheet number, again if I recall correctly.

An interesting note is that under "MULTI-GRADE ENGINE OILS (Sheet No. 226.5)" "Mobil 1" is there, all the way back in 1991. In the 2007 booklet for 229.5 Mobil 1 is also there, and 0W-40 is still there today...
All that has become part of the Bevo lists, under their respective sheet #s and has been updated as necessary. All fluid requirements in one place.

I stand by my point that there is zero benefit in using synthetic oils on cars that left the factory with conventional diesel rated conventional oil regardless of powertrain AND (ideally) require a oil service interval of no more than 5K miles
 

·
Outstanding Contributor
'85 300D Turbo, '91 420SEL, '92 190E 2.6, '09 C350, '12 E63 Wagon
Joined
·
3,166 Posts
Chevron Delo400 (available at Costco) or Shell Rotella T in 15W-40 NON-synthetic are the ideal grade oils for these motors, and that is what they left the factory with.
Yes, good idea to check the Bevo site!

For these two:

Shell Rotella T is nowhere to be found, old pages I've referenced and current Bevo.

Chevron Delo 400 Multigrade IS listed under 228.3 in the current Bevo list. (Interesting the principal listed is Chevron Global Lubricants, Belgium). Maybe approved for Europe, where you are...

Per the scanned sheet it is limited to:

"For year round use in naturally aspirated 601, 602, and 603 diesel engines, and for seasonal use in all other diesel (incl. turbo) engines"

Google search "2007 Mercedes Approved Fluids". You'll see everything superseded to 229.3 and 229.5 on page 2 (for vehicles without FSS, US model years 1997 and earlier), in which case neither Rotella nor Delo 400 qualifies.

Sent from my moto g(7) power using Tapatalk
 

·
Registered
'95 E300 DIESEL, '91 600SEL, '92 600SEL
Joined
·
17,158 Posts
Just for the record, both of my pre-FSS W140 V12s get Liqui Moly Leichtlauf High Tech 5W-40 and is on the Bevo 229.5 list as a tested & certified oil.

The '95 W124 E300 Diesel gets Chevron Delo400 with high levels of ZDDP before Chevron reformulated it and stripped out the ZDDP. Thankfully I had stockpiled an extra 100 gallons before Chevron pulled the "New Coke" trick.
 

·
Outstanding Contributor
'85 300D Turbo, '91 420SEL, '92 190E 2.6, '09 C350, '12 E63 Wagon
Joined
·
3,166 Posts
Thing is, even if the Chevron Delo has/had the ZDDP you desire(d), it was not on the old lists, meaning it wasn't ever specified as approved for the car. Maybe now yes, and only in Western Europe...

Same type of research led me to G-48 coolant vs G-05.....

Sent from my moto g(7) power using Tapatalk
 

·
Registered
Joined
·
13 Posts
Anybody use Amsoil such as this blend:
says it's Mercedes approved 229.5 Kinda pricey though
 

·
Registered
'95 E300 DIESEL, '91 600SEL, '92 600SEL
Joined
·
17,158 Posts
Not worth paying the premium price for a W124. Instead spend the money on premium fuel, as that is what the car needs way more than premium oil.
 

·
Outstanding Contributor
'85 300D Turbo, '91 420SEL, '92 190E 2.6, '09 C350, '12 E63 Wagon
Joined
·
3,166 Posts
Anybody use Amsoil such as this blend:
says it's Mercedes approved 229.5 Kinda pricey though
At my local Walmart I can get a 5 qt jug of Mobil 1 0W-40 for $25 and change. Since it is also Mercedes Approved and Mobil provides a similar engine warranty (for whatever that's really worth I'm not sure anyone has made a claim,) I'd just buy the Mobil 1. (And I'm actually an Amsoil dealer and get the wholesale pricing).

Sent from my moto g(7) power using Tapatalk
 

·
Registered
1989 300CE & 1971 280SE; 73.5 911T
Joined
·
161 Posts
That "Bible" makes great bathroom reading material. What other value it has, I have no idea.
The Bentley Publishers W124 Manual is good for DIY beginner home mechanics who are unfamiliar with their new W124.
It taught me how to change 1) the fuel filter; 2) the ATF & ATF Filter & how to drain the torque converter; 3) the power steering oil & filter; 4) how to adjust the rear emergency brake shoes; 5) the Polyribbed V-Belt (Serpentine), 6) the distributor cap was hidden under that cover.

I could figure out the engine oil & filter, the spark plugs, the air filter, the coolant, the differential oil, the brake pad replacement on my own.
It taught me that the console wood is Burl Walnut, side panel trim & bumpers paint code, interior color name, exterior color paint code, chassis number, transmission number & location, gear ratios, Bosch CIS-E fuel injection continuous electro-mechanical, engine number & location, compression ratio, horsepower, torque, how to check refrigerant charge.
Some trouble areas of the M103 engine like fuel odor, starting but then stopping & how to fix those problems.

It was well worth the $35.from books4cars.com including shipping cost.
It helped me a lot.
It does not cover troubleshooting, particularly, but does teach the beginner about their W124 car.
 

·
Outstanding Contributor
'85 300D Turbo, '91 420SEL, '92 190E 2.6, '09 C350, '12 E63 Wagon
Joined
·
3,166 Posts
I have a Bentley manual for a BMW E90. While I learned how to access BMW TIS I find their book accurate and detailed enough for the jobs they cover, to be equivalent to the actual original instructions. It does not cover everything, but I'm happy with it. Hayes (did I spell that right?) was one of the earliest manuals I got for the W123. Strangely it has pictures of spark plug wear, even though the car is a diesel. That one left a lot to be desired).

Sent from my moto g(7) power using Tapatalk
 
1 - 20 of 35 Posts
Top