Should I Use 10w30 or 10w40?

Answer

Whether you should use 10w30 or 10w40 depends on your type of vehicle. To determine the best oil to use for your car or truck refer to the owner's manual.
Q&A Related to "Should I Use 10w30 or 10w40?"
1. Locate the cap to the oil tank in the engine of the car. Using a rag, turn the cap and unscrew it. Take it off and place it somewhere safe so that you don't lose it or let it fall
http://www.ehow.com/how_6543152_mix-10w-30-motor-o...
10w40 is thicker (but only when hot, they are the same thickness cold.
http://wiki.answers.com/Q/What_oil_is_thicker_10W3...
Most cars call for 5W-30 or 10W-30, but if you are in warmer
http://www.chacha.com/question/what-is-the-differe...
10W40 Oil is thicker than 10W30 Oil, but only when hot. They both have the same viscosity when cold.
http://www.kgbanswers.com/what-is-the-thicker-oil-...
Explore this Topic
The difference between 10w30 and 10w40 oil is the thickness or viscosity of the oil. At cold temperatures or when an engine is cold, both of these oils operate ...
In 10w30, the letter W stands for winter. The SAE (Society of Automotive Engineers) launched a series of viscosity classifications at both 100 and at 0 degrees ...
The difference between 5W30 and 10W30 oil is that 5W30 oil flows much better when the temperature is colder. However, the main difference is their weight. ...
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