Is it better
#1
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Year: 1998
Model: Cherokee
Engine: 4.0 liter
Is it better
I was wondering since in the summer your oil heats up and thins out. So having 10W 30 oil in the summer since its a thicker viscosity oil will help coat your engine but using 5W 30 in the winter helps. Or am I wrong on this.
#2
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Year: 1996
Model: Cherokee
Engine: 4.0 upgraded
All oil is that xW-30 has the same viscosity at operating temp. oil never "thins out" but at cold-start up temp a 0w oil will have a viscosity closer to operating temp providing better lubrication on start up. whereas a 10w oil will be farther from operating temp viscosity and provide "worse" start up lubrication. if you can you should run 0w!
#3
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Year: 2000
Model: Cherokee
Engine: 4.0 high output, Alabama Cylinder head, 60mm bored TB
All oil is that xW-30 has the same viscosity at operating temp. oil never "thins out" but at cold-start up temp a 0w oil will have a viscosity closer to operating temp providing better lubrication on start up. whereas a 10w oil will be farther from operating temp viscosity and provide "worse" start up lubrication. if you can you should run 0w!