Only if the temps are below -20 would a 5w oil provide a benefit over 10w. Otherwise if you're temps don't get below freezing I wouldn't worry much.No one ever uses 10W that is too thick for cold starts especially in the winter.
They must live in Alaska then cause there's no need for an oil that thin.Well, I have seen a lot of people going the opposite way and running 0W oils.
Oil weight, or viscosity, refers to how thick or thin the oil is. The temperature requirements set for oil by the Society of Automotive Engineers (SAE) is 0 degrees F (low) and 210 degrees F (high).
Oils meeting the SAE's low temperature requirements have a "W" after the viscosity rating (example: 10W), and oils that meet the high ratings have no letter (example SAE 30). An oil is rated for viscosity by heating it to a specified temperature, and then allowing it to flow out of a specifically sized hole. Its viscosity rating is determined by the length of time it takes to flow out of the hole. If it flows quickly, it gets a low rating. If it flows slowly, it gets a high rating.
Engines need oil that is thin enough for cold starts, and thick enough when the engine is hot. Since oil gets thinner when heated, and thicker when cooled, most of us use what are called multi-grade, or multi-viscosity oils. These oils meet SAE specifications for the low temperature requirements of a light oil and the high temperature requirements of a heavy oil. You will hear them referred to as multi-viscosity, all-season and all-weather oils. An example is a 10W-30 which is commonly found in stores. When choosing oil, always follow the manufacturer's recommendation.
I was going to explain to 03gtdrkpny why there was really no reason to run a 5w20 in the winter and a 5w30 in the summer. If anything he should just run 5w30 year round. Then I thought about all the typing I'd have to do to explain why and well... I'm just too lazy to type it out.
I was going to explain to 03gtdrkpny why there was really no reason to run a 5w20 in the winter and a 5w30 in the summer. If anything he should just run 5w30 year round. Then I thought about all the typing I'd have to do to explain why and well... I'm just too lazy to type it out.
U.M.
Yup. No need for 5w here in 'Bama.i live in alabama and during winter the coldest it gets is probably low 40s sometimes 30s....but summertime it's mid 90s so is 10w30 good?
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