Quote:
Originally Posted by sirlitchfield
Not sure what the oil pressure is, How much thicker is 5w40 compared to both 5w30 and 10w40? Is it in between?
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Oh, you don't have a oil pressure gauge?
Ok, oil figures come in 2 parts, and they refer to the ability for the oil to flow, using water as a reference.
So, 0W30 for example behaves like water when cool, and like a 30 weight oil at operating temp.
During summer, I run 15W40, during winter I run 5W40. And I also run Nulon in all of my motors.
So to use the examples you provided, 5W40 is one step thicker at operating temp than the 5W30.
Does your car burn any oil? If so, how much over a given amount of time?
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