Is the Mobil 1 0w-40 diesel rated? It has an SM/CF rating. At $6.29/qt it's too expensive for summertime, but it would make sense for winter (when my car is not really driven anyway).

at the risk of starting a flame war, I'll say that if you're not going to drive it during the winter at all, that I'd use the cheapest oil I can.

Reason being is that you're going to start it a few times only. I'd want the contaiminents out for the long sit, then run the good stuff when you're driving it.

~Nate

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95 Honda Shadow ACE 1100.
1999 Plymouth Neon Expresso. 2.4 swap, 10.5 to 1 comp, big cams. Autocross time attack vehicle!
2012 Escape, 'hunter" (5 sp 4cyl)

For what I can remember here at work - that looks to be the oil I have in my v-12

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~shell
As of 2/2010:
2001 CLK55 0o\=*=/o0
13.6 @ 106mph
10K mi
1984 300SD
260K mi and going and going...
97 S600
46K miles
1991 Sentra SE-R (extremely dorked with)
www.se-r.net

As I recall, the 0w oils are too thin for the pressures encountered in a diesel.

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RRGrassi


70's Southern Pacific #5608 Fairmont A-4 MOW car

13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete.

91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K

90 Dodge D250 5.9 Cummins/5 speed. 400K

Try Murrays. I think it's $5.79/qt.

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95 E320 Cabriolet, 159K

Works great in the newer ones thats for sure. It is diesel rated.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

I like the look of Mobil 1 5w40 Deisel truck oil...
I just wish I could find it on store shelves...
sticking with The Rotella synthetic for now.

I believe the Mobil 1 5W-40 Turbo Diesel Truck, Truck & SUV, and Delvac are the same oil. The only difference is the marketing attributed to each oil.

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95 E320 Cabriolet, 159K

Correct. I just bought two gallons from the dealer for $5 a quart.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

Guys, the newest "T&SUV" oil is 5W30 and carries no diesel ratings whatsoever. The new 5W40 oil is call Turbo Diesel Truck...for those of you who can find it.

Mobil 1 0W-40 full synthetic IS good for your diesel. It's what Mercedes Benz recommends for the 606 and is what I used without any problems. I got mine for $5.50 / quart at the dealership. I think it was $5.99 at PepBoys. You should be able to go 7,500 miles before an oil change which makes it cheaper than using dino.

Scott

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Scott
1982 Mercedes 240D, 4 speed, 275,000
1988 Porsche 944 Turbo S (70,000)
1987 Porsche 911 Coupe 109,000 (sold)
1998 Mercedes E300 TurboDiesel 147,000 (sold)
1985 Mercedes 300D 227,000 (totaled by inattentive driver with no insurance!)
1997 Mercedes E300 Diesel 236,000 (sold)
1995 Ducati 900SS (sold)
1987 VW Jetta GLI 157,000 (sold)
1986 Camaro 125,000 (sold - P.O.S.)
1977 Corvette L82 125,000 (sold)
1965 Pontiac GTO 15,000 restored (sold)

Just noticed you had a 617. For some reason I thought you had a 606. I doubt it would make a difference but you may want to hear from people who made the switch in older cars.

Scott

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Scott
1982 Mercedes 240D, 4 speed, 275,000
1988 Porsche 944 Turbo S (70,000)
1987 Porsche 911 Coupe 109,000 (sold)
1998 Mercedes E300 TurboDiesel 147,000 (sold)
1985 Mercedes 300D 227,000 (totaled by inattentive driver with no insurance!)
1997 Mercedes E300 Diesel 236,000 (sold)
1995 Ducati 900SS (sold)
1987 VW Jetta GLI 157,000 (sold)
1986 Camaro 125,000 (sold - P.O.S.)
1977 Corvette L82 125,000 (sold)
1965 Pontiac GTO 15,000 restored (sold)

You want to use 5W40 M1 for you 617. That's what the Mobil web site recommends, and it has a CI-1 Plus rating. IMHO, 0W40 is to thin for the 61X diesels.

Thanks. I thought it may be too thin. I would use the 5w40M1 all year if I could only find it.....

I have the same problem, my car was in the shop a couple of weeks ago so I had them put in M1 5W40 (from their 55 gallon drum). When I get home next week it will be due for another change so I will have to see if I can find it again.