I'm soon to get my fall oil change- just wondering what do people use for winter oils. I live in NJ near new york city but often am in Troy, NY (near albany) , so its not too cold but I'd say an average temperature on a winter day is about 10-30 degrees F (low to high).

I've been using Mobil Delvac 15W40.

Also would there be any advantages to using a synthetic?

Thanks.

Also, if anyone lives in either of the areas I mentioned above I have had some problems with my car I posted in this thread -
1991 350SDL car shutoff problems, turbo problems --> i just want my damn car to work

I am looking for someone in the area I can possibly meet up with to help me diagnose the problems and *hopefully* fix them.

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1991 350SDL (Navy Blue) - 278k

Synthetic is available in the 5w40 weight which is perfect for easy cold starting, it flows way way way better than 15w40 dino oil.

Two good and readily available oils in this weight are Shell Rotella-T 5w40 Full Synthetic, and Mobil 1 "Turbo Diesel Truck" 5w40 synthetic.

I've used both, they both work well. Rotella is a little cheaper, and is available in gallon jugs.

Totally recommend it for use both year round and especially in the winter. The engine will appreciate it.

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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

I use Rotella 15w40 all year. I haven't had any trouble starting in either place I've lived the past few years (State College, Pa., and Delaware) ... including a -7 degree start. Maybe be a different story for other folks ... everybody's car (and weather) is different.

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1987 300D, arctic white/palomino--314,000 miles
1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles
2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles
2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles
1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles
1995 S320, black/parchment--34,000 miles (Dad's car)

Any 5W40 synthetic diesel rated oil will be very good year-round.

You should pick an oil and stick with it. Changing oil types and weights results in mixing and could have adverse effects between the additive packages.

Valvoline Quickstops have the Premium Blue Extreme 5w40 I use in my truck during the winter, also a synthetic like the others have mentioned. Kinda spendy though if you don't have a hookup at a lube place. Some autozones sell it ~14 bucks a gallon, you just have to look around.

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2003 Dodge Ram 2500 Cummins - Georend fully built trans, Banks Big Hoss Bundle, Smarty Tuner, 5" turbo back exhaust. 500 HP and 1100 ft/lbs to the ground.
1979 Mercedes-Benz 300CD - Lost to a four car pile up on 275, Thank You Michigan Drivers.
1986 Mercedes-Benz 300D - Sold, Euro non-turbo car.

Modern diesel oils will spare you from the "seasonal changeover" and can provide myriad other benefits. These oils are rated all seaon/all climate.

at Wall'sMart's:

• Shell syn Rotella (blue bottle) 5W40 @$16/gallon
• Mobil 1 5W40 Turbodiesel Truck @ $23/gallon

Enjoy.

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1998 W210 diesel (wiped out by a texter)
Baum spring compressor "for rent"

I've been using the "Diesel/Turbo" 5-40 synth. And with 231K on the clock, I thought long and hard about the 5, and not the 15 we're used to with dino diesel. Still, cold start protection is what I'm after = 5-40 synthetic diesel blend motor oil.

I bought the Mob1 since Wally World didnt have the Rotella ( its like $5-6 more). I saw the Rotella synth at Tractor Supply.

wow $16/gal is cheap.

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http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

That was also , btw, the price at Tractor Supply 16.xx/gal.

Yeah, at autozone you can get the Rotella-T 5w40 Synthetic for $17.99 a gallon, but they also have the rewards program, and, they are not walmart, which is why I buy from them 99% of the time. (down with walmart)

Come my next oil change (a ways away at this point), I'll be switching to the Rotella Synthetic over the Mobil stuff. Cost effective and means I can change it a little sooner (4000-4500 miles rather than 5500)

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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

I was in Autozone today and checked:

syn Rotella was $18/gallon

M1 TDT 5W40 was $6.19/qt.

I use the Mobil Delvac 1, 5W-40 in all my cars, year round. I get it at a good price from my MB dealer - they add my orders to their running Mobil Oil orders at a minimal mark-up. It comes in gallon jugs (silver vs. the dino Delvac which comes in a black gallon jug). Better price than the quarts of Truck and TurboDiesel at Wally World. But, oil choices these days are pretty broad, and you have to try to get it wrong. Especially if you select a good Diesel oriented, true synthetic. Jim

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Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)

Any 5w40 synthetic is good for year round. I prefer Delvac 1.

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2016 Corvette Stingray 2LT
1969 280SE
2023 Ram 1500
2007 Tiara 3200

can someone explain to me the difference between 5w40 and 15w40 . Why is 5w40 double the price?

Also which is better considering my car is a big oil burner. I can't find a leak anywhere - it doesnt leak- just burns oil like a monster. Would a heavier oil be better in this case?

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1991 350SDL (Navy Blue) - 278k

How much oil does your car burn? Might be time to start looking for a long block. You do know about 3.5L 603's rod bending problems correct?


Synthetic costs a ton more, because its more expensive to make. But its less affected by cold temps so it starts better in the winter.

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2016 Corvette Stingray 2LT
1969 280SE
2023 Ram 1500
2007 Tiara 3200