Pressure and temperature are the two factors that affect flow and viscosity. Viscosity refers to the resistance of a liquid to the shear forces.
The wrong viscosity of oil in your engine.
Factors that affect a fluid's viscosity include temperature (higher temperatures lead to lower viscosity), pressure (increased pressure can increase viscosity), and the composition of the fluid (molecular size and shape can affect how easily molecules can flow past each other).
As temperature increases viscosity decreases.
As the engine wears, the bearing clearances become a little larger, REQUIRING that you use a higher viscosity oil to maintain oil pressure. If using the recommended oil viscosity results in low oil pressure, you should certainly switch to the 10W40. HOWEVER, if the engine can maintain oil pressure using the recommended oil viscosity, you will get better economy and the engine will perform better.
Cannabis oil viscosity refers to how thick or thin the oil is. The viscosity can affect how easily the oil can be vaporized or absorbed by the body. Lower viscosity oils tend to be thinner and may be more suitable for vaping, while higher viscosity oils may be preferred for topical or oral use.
That depends entirely on the condition of the engine. If the bearings are not worn, you would do better with a lighter weight oil (lower viscosity). If the bearings are starting to wear a little, you'll need something with a little higher viscosity, such as 10W30 or even higher. The oil pressure gauge is the best indicator of whether you should be using a higher viscosity oil. If the oil pressure drops significantly when the engine is hot and at an idle, switch to a higher viscosity oil. If the oil pressure stays up, don't use the higher viscosity.
Possibly but not likely. If you suspect the PCV valve is bad, replace it. The two deal with different aspects of engine operations. While a PCV can affect the way an engine runs, and even allow for a buildup of crankcase pressure, it will not affect oil pressure. If you have low oil pressure it may be time to change to a heavier (thicker) grade of engine oil. For example, if you're currently using a 5W15 oil, change to 10W30. Higher numbers indicate that the viscosity of the oil is thicker and can revive the oil pressure of an older engine that is starting to experience some wear.
Yes, crude oil contains various fractions with different viscosities. Some fractions, such as light crude oil, have low viscosity, while others, such as heavy crude oil, have high viscosity. The viscosity of crude oil can affect its flow characteristics and processing requirements.
No, the oil level can affect the the oil pressure if it is too high or low. The coolant level has no connection with the engine oil pressure.
In short, NO. Check your oil level and viscosity, or just change your filter and oil to be sure. Low pressure can come from a clogged filter.
Single viscosity is high quality oil. Mulit-viscosity oil is used for in the winter.