Thoughts for oil in the great North

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Dodge 1500 4X4

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Wanted to get some ideas, I've had Redline 5w30 in my truck since new, now in the great north the temps been down in the low 30's and then down to -20, I'm getting some good old piston slap at cold start up, I couldn't believe what I was hearing, recommendations here the general consensus is Redline 0w20 and I'm putting a Wix XP oil filter on it, should take care of that problem, thoughts, ideas Thanks All
 

Burla

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Since Justin brought this up, we have had severalrams cold piston slap on 5w30, so much so that I wouldn't use it in cold state. At a minimum 0w30 redline, but 0w20 would be more aggresive.

Three choices, 0w20, 5w20, or 0w30. If you have hemi tick, 0w30 has proven to keep the tick just as quiet in trucks like hemi395's, but still better at piston slap. But it is a risk because that weight it is not as aggressive at cold piston slap. So if you compare the two 20 weights, you see a huge difference in cold performance and hot performance. 5w20 does better in hot viscosity tests noack and hths, and 0w20 kills it in cold performance. When you look at viscosity index, it is an easy choice man, 0w20 redline is the way to go if you need a 20 weight for that piston slap.

0w20 redline below...

Vis @ 100°C, CSt9.1
Vis @ 40°C, CSt48
Viscosity Index 172
CCS Viscosity, Poise, @ °C55@-35
Pour Point, °C-60
Pour Point, °F-76
NOACK Evaporation Loss,1hr @ 482°F (250°C), %9
HTHS Vis, CP @150°C, ASTM D4741 2.9

5w20 below...

Vis @ 100°C, CSt 9.0
Vis @ 40°C, CSt 53
Viscosity Index 147
CCS Viscosity, Poise, @ °C 60@-30
Pour Point, °C -45
Pour Point, °F -49
NOACK Evaporation Loss,1hr @ 482°F (250°C), % 8
HTHS Vis, CP @150°C, ASTM D4741 3.0
 

Burla

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0w30 in comparison, still great cold numbers, a lil better hot numbers then 20 weights...

Vis @ 100°C, CSt 11.7
Vis @ 40°C, CSt 69
Viscosity Index 166
CCS Viscosity, Poise, @ °C 55@-35
Pour Point, °C -60
Pour Point, °F -76
NOACK Evaporation Loss,1hr @ 482°F (250°C), % 9
HTHS Vis, CP @150°C, ASTM D4741 3.4

5w30 you see it's just too thick and not enough cold performance..

Vis @ 100°C, CSt 11.9
Vis @ 40°C, CSt 71
Viscosity Index 166
CCS Viscosity, Poise, @ °C 60@-30
Pour Point, °C -45
Pour Point, °F -49
NOACK Evaporation Loss,1hr @ 482°F (250°C), % 6
HTHS Vis, CP @150°C, ASTM D4741 3.7
 

Burla

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So yeah go 0w20 redline and let us know if you get warm idle tick, if not you are done.
 
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