I'd stick with 5w-40 all year.
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I'd stick with 5w-40 all year.
2018 Ram 2500 4x4 G56
Romans 10:13
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I never know where I'll be at anytime of the year, I run 5w-40 Rotella T6 year round
Jim
2006 ~ 2500HD, Big Horn Edition, 5.9, 4x4, Q/Cab, 48RE, L/B, 3.73, S&B CAI & Snout, ProFlo 5" S/S exhaust, Smarty Touch, Oil ByPass Kit, 60 gal main tank, 110 gallon in-bed tank, XX-Fuel Filter System, Coolant Bypass Kit, Mag-Hytec front & rear end covers and trans pan, 285 x 70 x 17
"Freedom is never more than one generation away from extinction. We didn't pass it to our children in the bloodstream. It must be fought for, protected, and handed on for them to do the same, or one day we will spend our sunset years telling our children and our children’s children what it was once like in the United States, where men 'were' free." ~ Ronald Regan
also not knowing what truck you have ((EDIT) saw the mileage in original post you can ignore the "older trucks" part, but others may find it relevant) I will also say this. anything with an EGR and DPF run 5-40 always. The older trucks 12V VP44 and the 03-07 with the CP3 I ran 15-40 year around and used the block heater (the book says you can run a lighter oil, I never was a fan of that), never had an issue (one truck I maintained/drove over a million miles) NWNJ and I see similar temperatures to you as I travel the NE US a good bit.
2014 Ram 2500 CCSB Ram Box Larime
2011 Ram 5500
2006 Diesel Jeep Liberty
RIP. 2016 Tradesman 2500 picked up 9/28/16 MM3 DRD Tuning 107K miles wrecked by jeep wrangler.....
Other Toys: 1973 Charger Bougham edition 400 big block 42K original miles
Unicycles (about 3 dozen)
6 in a row makes her go
I run 15w-40, but single digits temps round these parts is rare.
I use Shell T6 5w-40 for several reasons.....
1 - Quality product
2 - Widely available
3 - Cheap ($55 for 12 quarts)
4 - I have talked to former Shell engineers in multiple conversations and am satisfied with my findings
5 - In Wyoming it varies widely during the winter, one day is -25F the next is 40F above
Diesel Master Tech Certified - ICML Machinery Lube Certified
2002 QCLB 2500 5.9 HO NV5600 = Ranch truck with CM Flatbed, DPS Exh/Int Manifolds, Boost Elbow
2018 CCLB 2500 ST 6.7 G56 = Glacier intake manifold & horn, Flo-pro 4" SS, MM3 with DRD 30hp tune, Valair quiet dual disc clutch, Laramie 18's powder coated black and blackout badges
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