Oil recommendation for cold weather - Dodge Cummins Diesel Forum

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post #1 of 11 (permalink) Old 10-17-2011, 09:18 AM Thread Starter
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Oil recommendation for cold weather

Well its getting to be that time of year...

What oil would you folks recommend for cold weather in the old 6BT?

I have been using Shell Rotella T 15w40 all summer, I change it and the filter every 5000kms.

15w40 is a bit too thick for these cold mornings we've been having recently.

What do you guys think, 5w40 too thin? My truck is my daily driver, just used for short trips no hauling during the winter months.

I live in a condo and have no access to a plugin for the block heater, so on really cold mornings I probably wont even use my truck.

Thanks

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post #2 of 11 (permalink) Old 10-17-2011, 05:19 PM
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I used Rotella 5W40 Syn. all last winter and truck started first try unplugged. I'm in N Indiana not as cold as you but was a colder than normal last winter. I tried to part the front of the truck out of the wind close to the building.

92 D250 custom made bed, 190 inj., 16cm , electric cooling fan, 2nd gen air horn, 5spd., Dana 61 3.31 gears, 1 stage W/M set up

97 2500 4X4 auto DDP 40 HP injectors, no 8 fuel plate, homemade 3" intake horn, BD converter, BHAF, electric cooling fan
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post #3 of 11 (permalink) Old 10-17-2011, 06:51 PM
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Just run the 15/40, it will start fine, especially if you plug the truck in, which is always a good idea. I start plugging equipment in at 40 degrees. Colder in northern BC than you would normally get, and works fine.

Stock 93 12v reg cab 2wd 4:10 rear 5spd getrag synthetic gear oils, Pac brake and K&N air filter, 20 mpg(imp) grossing 16,500 lbs, gotta love that. Keremeos BC
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post #4 of 11 (permalink) Old 10-18-2011, 12:54 PM Thread Starter
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Cool, thanks, I'm going to change to Rotella 5w40 next oil change.

Hopefully we dont see too many 0 Fahenheit days this winter....
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post #5 of 11 (permalink) Old 10-18-2011, 01:00 PM
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Let me warn you you may see a few more oil leaks than using 15W40 I've gotten about 8,000 Miles on this oil and only added 2 quart at the most. I run synthetic in both my 92 and 97 and they both started good in cold weather.

92 D250 custom made bed, 190 inj., 16cm , electric cooling fan, 2nd gen air horn, 5spd., Dana 61 3.31 gears, 1 stage W/M set up

97 2500 4X4 auto DDP 40 HP injectors, no 8 fuel plate, homemade 3" intake horn, BD converter, BHAF, electric cooling fan
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post #6 of 11 (permalink) Old 10-18-2011, 01:12 PM Thread Starter
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I've taken care of all my oil leaks....except for the valve cover gaskets. They are so easy to change, I should just do it one of these days.

I've done the rear main oil sean and pan gasket earlier this summer.
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post #7 of 11 (permalink) Old 10-18-2011, 01:18 PM
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If you have to replace your valve cover gaskets it would be a good time to adjust your valves.

92 D250 custom made bed, 190 inj., 16cm , electric cooling fan, 2nd gen air horn, 5spd., Dana 61 3.31 gears, 1 stage W/M set up

97 2500 4X4 auto DDP 40 HP injectors, no 8 fuel plate, homemade 3" intake horn, BD converter, BHAF, electric cooling fan
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post #8 of 11 (permalink) Old 10-18-2011, 01:53 PM
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Don't you K-nucks have access to a 0-40 synthetic?
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post #9 of 11 (permalink) Old 10-18-2011, 02:03 PM
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Not that cold here.

92 D250 custom made bed, 190 inj., 16cm , electric cooling fan, 2nd gen air horn, 5spd., Dana 61 3.31 gears, 1 stage W/M set up

97 2500 4X4 auto DDP 40 HP injectors, no 8 fuel plate, homemade 3" intake horn, BD converter, BHAF, electric cooling fan
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post #10 of 11 (permalink) Old 10-18-2011, 11:12 PM
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Does a synthetic 15w40 like Redline or AmZoil have a lower pour point than Rotella?

I just got my first diesel truck. 93 1 Ton. I use AmZoil truck oil in my gas small engines, and it makes rope starting that was zilch to unbelievable almost easy.

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post #11 of 11 (permalink) Old 10-19-2011, 06:46 AM
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hey-Hey!!!,
I run the Mobin 1 5W-40 in mine. Tried the Rotella 5W40 but it consumes that stuff( leaks are the same between the two ). Starting is easy, and that w/o waiting for the grid heater to cycle.
cheers,
Douglas

1990 D250, NV5600, 16cm housing, PAC brake, TST Kit KDP tab, Powr-Lok'd 3.07, HX35....IC soon
1991 D250, 16cm housing
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