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Re: Edge 0w40 Euro ok for old Mercedes 5 cyl diesel? [Re: KMJ1992] #4718272
04/06/18 11:37 AM
04/06/18 11:37 AM
Joined: Dec 2005
Posts: 10,023
Upper Midwest
kschachn Offline
kschachn  Offline
Joined: Dec 2005
Posts: 10,023
Upper Midwest
Originally Posted By: KMJ1992
My Merc is a gas v8 m119 and newer, and it doesnt loke 0wx oil. 5w40 in the winter 10w40 in the summer. Thats not technical info, just based on my ear for smoothness. Just my 2c. PO had m1 0w40 in when i bought it, i now have 10w40 MaxLife in it and it is much quieter once hot. Same for the 5w40 synpower i ran for my last winter change.

Unless you are below 0F the winter rating between the 0W and the 5W (and slightly higher temps the 10W) is meaningless. If you notice a difference between the three oils it isn't due to the W rating it is due to the HTHS of the oil overall.


1994 BMW 530i, 231K
1996 Honda Accord, 263K
1999 Toyota Sienna, 402K
2000 Toyota ECHO, 272K
Re: Edge 0w40 Euro ok for old Mercedes 5 cyl diesel? [Re: Gasbuggy] #4718305
04/06/18 12:06 PM
04/06/18 12:06 PM
Joined: Sep 2013
Posts: 10,534
Indiana
dlundblad Offline
dlundblad  Offline
Joined: Sep 2013
Posts: 10,534
Indiana
10w40 (non A3/B4) diesel oil just doesn't exist nowadays in the US. If it does, someone let me know. I know they spec'd that back in the day though.

15w40 or 5w40 HDEO's and look no further. Nothing wrong with 15w40 here IMO.


03 Jeep WJ 4.0 200k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 177k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 149k Rotella T5 10w30 Supertech ST3980

Re: Edge 0w40 Euro ok for old Mercedes 5 cyl diesel? [Re: dlundblad] #4718470
04/06/18 03:09 PM
04/06/18 03:09 PM
Joined: Dec 2009
Posts: 25,612
Regina, Saskatchewan, Canada
Garak Offline
Garak  Offline
Joined: Dec 2009
Posts: 25,612
Regina, Saskatchewan, Canada
Originally Posted By: dlundblad
10w40 (non A3/B4) diesel oil just doesn't exist nowadays in the US. If it does, someone let me know. I know they spec'd that back in the day though.

You can find some 10w-40 boutiques that still advertise CF, for those vehicles that require it. Of course, that makes for kind of an odd choice, buying a 10w-40 CF at boutique prices to avoid an A3/B4 or a more modern HDEO at lower prices.


Plain, simple Garak.

2008 Infiniti G37 - Shell ROTELLA T6 Multi-Vehicle 5w-30, NAPA Gold 7356
1984 F-150 4.9L - Quaker State GB 10w-30, Wix 51515
Re: Edge 0w40 Euro ok for old Mercedes 5 cyl diesel? [Re: fdcg27] #4726986
04/14/18 06:12 PM
04/14/18 06:12 PM
Joined: Sep 2012
Posts: 2,221
London, England
bigjl Offline
bigjl  Offline
Joined: Sep 2012
Posts: 2,221
London, England
Originally Posted By: fdcg27
Nothing loads the oil with soot like an old Benz diesel.
Having had two W123 240Ds, I do have some experience with this. After very few miles, the oil would be jet black and would have a distinctive scent.
Having written this, I'd recommend a diesel oil.
Since the five cylinder engine makes only 77 bhp, a HDEO 10W-30 would likely be fine for it.
I'd certainly use a HDEO over the PCMO you have in it now.
The extra dispersants in a HDEO are probably desirable.
IIRC, 3K was the recommended drain interval for engine oil on these guys, along with the coffee can sized cartridge filter.


Any oil with B3 or B4 is specced for Diesel.

I haven't seen an oil that is solely for petrol or diesel in the UK for decades

Even when you look at Mobi1 0w40 Turbo Diesel ot is also specced for petrol engines.

In the case of the OP I would probably use a 10w40 or 15w40.

Either way that old Merc diesel will likely still be running just fine in another 250k miles.

Not very quickly perhaps but slowly but surely!

I would love to have one of these old Merc diesels at some point.


16 S350d LWB 25k Mobil Super 3000 XE 5w30
17 Smart ForFour Auto 6.5k Mobil 1 0w40 FS
Re: Edge 0w40 Euro ok for old Mercedes 5 cyl diesel? [Re: Gasbuggy] #4728110
04/15/18 06:24 PM
04/15/18 06:24 PM
Joined: Sep 2009
Posts: 16,118
OH
fdcg27 Online content
fdcg27  Online Content
Joined: Sep 2009
Posts: 16,118
OH
This is an old school fully mechanical IDI diesel and it will soot load the oil heavily.
The oil will be jet black shortly after being changed and will have a distinctive scent.
I know this from the W123 diesels that we've had.
IIRC, Mercedes called for 3K drains on these engines, so almost any modern oil of adequate HTHS viscosity should be okay.
If you had loaded up on clearance Rotella T5 10W-30 during last year's AMIR giveaway pricing, you'd have a good cheap oil for this engine.
Nothing wrong with PP 0W-40 bought at a deal, though.
I'd have no problems running it year 'round should we ever again own an old MB diesel and should I be able to get the oil at a deal.

Or the Edge 0W-40 you got at a deal:)

Last edited by fdcg27; 04/15/18 06:33 PM. Reason: correction

18 Accord Hybrid FF
17 Forester 18K VME 0W-20
12 Accord LX 96K SSO 0W-20
09 Forester 95K M1HM 10W-30
01 Focus ZX3 118K PP 5W-20
96 Accord LX 104K T5 10W-30
95 318i
Re: Edge 0w40 Euro ok for old Mercedes 5 cyl diesel? [Re: bigjl] #4728396
04/16/18 01:28 AM
04/16/18 01:28 AM
Joined: Dec 2009
Posts: 25,612
Regina, Saskatchewan, Canada
Garak Offline
Garak  Offline
Joined: Dec 2009
Posts: 25,612
Regina, Saskatchewan, Canada
Originally Posted By: bigjl
In the case of the OP I would probably use a 10w40 or 15w40.

Yep, that's the thing. Everywhere else in the world, an A3/B3 A3/B4 10w-40 or 15w-40 can be found. Here, if it's a 15w-40, it's going to be an HDEO. Of course, that works, too, but your point about A3/B4 is well taken.


Plain, simple Garak.

2008 Infiniti G37 - Shell ROTELLA T6 Multi-Vehicle 5w-30, NAPA Gold 7356
1984 F-150 4.9L - Quaker State GB 10w-30, Wix 51515
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