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Discussion Starter #1
ok i get the 10w means 10 below i think right? i checked on wiki and the W ment winter, so what is the 20 or 30 or 40 mean? that it takes more heat to burn?
 

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There are two types of motor oils, single grade and multigrade. Multigrade oils such as a 10W-30, are designed to have the viscosity of an SAE 10W oil at cold temperatures combined with the viscosity of an SAE 30 oil at engine operating temperatures. The "W" or "Winter designation indicates that the oil meets viscosity requirements for low temperatures (below 30°F).[/b]
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Discussion Starter #4
^^^ thank you both

so my engine is burning oil, not a lot but a little bit, so i put in 10w 40, will that have a major effect on the car in winter?
 

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Not really. Only if temps get -10F or so. You should try a couple bottles of Auto RX.
 
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