Is it OK to use 5W40 instead of 10w40?
No, you can use 5w-40 anywhere a 10w-40 is recommended. At operating temperatures, both oils are 40wt and are equivalent. What matters most is the operating temp viscosity (the 2nd number). The first number (with a “w”) only applies to colder oil viscosity.
Whats thicker 5W40 or 10w30?
Characteristics of 10W-40 Motor Oil 10W-40 is a bit thicker than 5W-40 but is still rather thin and works well to lubricate the moving parts of an engine during start-up. This oil’s number “40” means it will be a little thicker than average while exposed to the heat of a running engine.
What’s the difference between 5W 40 and 10W 40?
The second number (40), determines the thickness of the oil while under the heat of a running engine. A higher number signifies the thickness of the oil under heat. 5W-40 is thin motor oil, meaning, it will easily get to a vehicle’s moving parts and lubricate while trying to start it up.
What is the viscosity of 10W40 motor oil?
10w40 motor oil is synthetic motor oil that has a viscosity of 10 in low temperatures and viscosity of 40 at higher temperatures, usually 100 degree Celsius.
What’s the difference between 40 and 30 motor oil?
The number ‘40′ indicates that it is thicker than the average motor oil which is ‘30’ for man cars. The oil is known to lubricate the engine even when it is hot. This is contrary to other engine oils which when they become hot their efficiency of lubrication goes down.
Which is thinner 10 W 30 or 40 W 40?
As such lower the number, the thinner the oil: a 30 oil is thinner than a 40 oil at 100°C etc. One must use the oil specified by the manufacturer. If you use 10-w-40 instead of 5-w-30 specified by the manufacturer then the viscosity of 10-w-40 used by you will be higher and oil thicker than what is specified during winters.
Is 0w40 better than 5w40?
Their significant difference is in their first code number. 0W40 circulates through and start your engine quicker than 5W40. So if you live in an area with a cold climate, 0W40 is better for your car engine than 5W40. However, 0W40 can be too thin to start your engine and give it adequate protection in areas with hotter temperatures.
What does 0W-40 really mean?
It actually stands for Winter. That’s because 0W-40 engine oil is formulated to flow like a 0 Weight oil in cold conditions, yet offer the protection of a 40 Weight motor oil when the engine reaches its full operating temperature.
What does the “5W-40” in motor oil mean?
The two numbers in the 5W-40 indicate the weight or viscosity of the engine oil as tested by SAE. Viscosity is defined as a fluid’s resistance to flow: The higher the number, the higher the fluid’s resistance to flow, or the thicker the fluid.
Is 5w40 oil thicker than 10W40?
On the other hand, the 10W40 motor oils are thicker than the 5W40 oils for good reasons. This oil type works pretty well in lubricating engine parts during startup. However, the main difference between these two engine types is that the 5W40 can work better than 10W40 in very cold places.