There are no much differences between the two oils in terms of the temperature range.
10w30 engine oil temperature range.
10w 30 isn t any different at starting temperatures than 10w 40 but at operating temperature the environment isn t going to have as profound an affect as if it were hot outside the vehicle.
It will perform best at temperatures above 18 degrees celsius 0 degrees fahrenheit and below 30 degrees celsius 86 degrees fahrenheit.
The viscosity of oil changes with temperature therefore multigrade oils were developed to provide protection across a range of operating temperatures.
10w30 is suited for hot temperatures while 5w30 works best at colder areas such as canada and los.
Let s go to the discussion.
If your car needs 10w 30 engine oil castrol offers a range of options all of which flow like 10 weight oil when cold and 30 weight oil at full engine operating temperature.
In other words if it s 90 degrees outside the temperature of your engine is already going to run at higher temperatures because of the ambient.
That s why the viscosity grade on the oil bottle is made up of two numbers.
The sae society of automotive engineers scale shows the viscosity of oil at both hot and cold temperatures.
With this content you can get a complete idea about these two engine oils.
In general 5w30 is a great multigrade oil designed to meet the demands of almost any temperature in both warm and cold climates.
10w30 however has a smaller temperature window.
We will discuss the ratings and uses of these two oils here.
Ideally you would want to use a 10w30 engine oil if you live in colder climates.
Most important things about sae 30 vs 10w30.
From here you can get a good idea of sae30 vs 10w30 engine oil.