I thought their auto selection tool would surely pick Turbo Diesel & Truck...

What gives?? Does anyone else use 0W40 in their Diesel?

M1 0W40

Also, TD&T does not say it is MB 228.31 approved. Is it?

Thanks.

__________________
1993 W124 300D 2.5L Turbo, OM602.962
2000 Chevrolet Cavalier, 2.4L DOHC
2002 Ford Explorer, 4.0L SOHC
2005 Toyota Prius, 1.5L

http://www.fuelly.com/sig-us/40601.png

The M1 0W-40 is I believe a class III synthetic, not a true synthetic.

__________________

Gone to the dark side

- Jeff

Maybe I'm mistaken, but aren't all Mobil 1 oils class IV synthetics?

__________________
'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.

It is recommended by European car makers, for use in Europe. When the outside temp is far below freezing, 0W X is not a bad idea.
In Raleigh we don't need it, I use TDT 5W-40 and my lifters like it. I'm going to Amsoil Euro formula soon because a friend can get it for slightly less than Mobil 1 cost. As far as the 228 rating, I think 229 ratings include some 228 specs - I may be wrong about that, though. I'm not sure if Mobil would write back if we asked but it couldn't hurt. One thing I do know about new oils...one of my part time shop buddies works for Volvo Trucks N.A. in Greensboro doing testing, mechanical and R&D. There are BIG changes in diesel emissions standards coming and one of the problems meeting them is zinc and phosphorus in oil contaminating the exhaust treatment process. The newer oils are good for this but the old timer mechanics are saying to use a zinc supplement (ZDDP) with older engines.

WAIT! FOUND SOMETHING!
see also, "table" at the end of the paragraph.

__________________
1987 300D (230,000 mi on a #14 head-watching the temp gauge and keeping the ghost in the machine)
Raleigh NC - Home of deep fried sushi!

From reading the specs, it looks like good oil. It's not what I use, but I don't think you would be going wrong using it.

__________________
Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.

I sent an email to Mobil and will post the reply when I get an answer. Thanks for all the comments.

__________________
1993 W124 300D 2.5L Turbo, OM602.962
2000 Chevrolet Cavalier, 2.4L DOHC
2002 Ford Explorer, 4.0L SOHC
2005 Toyota Prius, 1.5L

http://www.fuelly.com/sig-us/40601.png

No.

The TD&T (also Delvac 1) and the extended-mileage Mobil 1 are class IV, the rest of the Mobil 1 family is not, introduced a few years ago to combat cheaper synthetics from other manufacturers. Amsoil started to introduce Class III and blends about the same time.

Castrol EDGE is a good up-and-coming class IV syn oil, only available locally in a couple of flavors and I haven't checked for a diesel rating, but I've always liked their ATF (AKA: Allison Transynd) and dino oils.

__________________

Gone to the dark side

- Jeff

'Doesn't Matter (We don't care) what Mobil says.
[What does your OM say?]
[Viscosity Requirements are basically set in stone by the Manufacturer of the Engine]
[What does Technical @MB in "Nieu Joisey" say?]

Any Viscosity lower and You're Playing With the Need for a new engine...
Much,Much earlier than you should be.

__________________
'84 300SD sold
124.128

I am not sure this response makes things any more clearer...

__________________
1993 W124 300D 2.5L Turbo, OM602.962
2000 Chevrolet Cavalier, 2.4L DOHC
2002 Ford Explorer, 4.0L SOHC
2005 Toyota Prius, 1.5L

http://www.fuelly.com/sig-us/40601.png

15W50 is good oil. It has the most anti-wear additives of any of Mobil's synthetic oils.

The newest bottles of 15W-50 no longer have the API CF rating, but it's supposed to be unchanged and still provide the same level of protection as the CF rated bottles.

https://www.mobiloil.com/USA-English/MotorOil/Car_Care/AskMobil/Mobil_1_15W50_in_Diesel_Engines.aspx

__________________
'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.

Must be extremely recent. The bottle I bought last weekend is marked for CF.

It's a pretty recent change. I had a discussion about it a few months ago on another forum.

http://www.benzworld.org/forums/3629895-post22.html

__________________
'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.

So any CF rated oil is all I need to adequately protect my 602?

__________________
1993 W124 300D 2.5L Turbo, OM602.962
2000 Chevrolet Cavalier, 2.4L DOHC
2002 Ford Explorer, 4.0L SOHC
2005 Toyota Prius, 1.5L

http://www.fuelly.com/sig-us/40601.png

Pretty much.

__________________
Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.