enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. List of crude oil products - Wikipedia

   en.wikipedia.org/wiki/List_of_crude_oil_products

   Crude oil is considered "heavy" if it has long hydrocarbon chains, or "light" if it has short hydrocarbon chains: an API gravity of 34 or higher is "light", between 31 and 33 is "medium", and 30 or below is "heavy". Crude is considered "sweet" if it is low in sulphur content (< 0.5%/weight), or "sour" if high (> 1.0%/weight). Generally, the ...

3. API gravity - Wikipedia

   en.wikipedia.org/wiki/API_gravity

   Crude oil is classified as light, medium, or heavy according to its measured API gravity. Light crude oil has an API gravity higher than 31.1° (i.e., less than 870 kg/m 3) Medium oil has an API gravity between 22.3 and 31.1° (i.e., 870 to 920 kg/m 3) Heavy crude oil has an API gravity below 22.3° (i.e., 920 to 1000 kg/m 3)

4. Heavy crude oil - Wikipedia

   en.wikipedia.org/wiki/Heavy_crude_oil

   Heavy crude oil has been defined as any liquid petroleum with an API gravity less than 20°. [2] Physical properties that differ between heavy crude oils and lighter grades include higher viscosity and specific gravity, as well as higher molecular weight hydrocarbon

5. Viscosity index - Wikipedia

   en.wikipedia.org/wiki/Viscosity_index

   Thus the issue of multigrade oils came into being, where with variable temperatures of, say, −10 °C during the cold nights and 20 °C during the days, a 5 weight oil would be good as the oil would be pumpable in a cold engine and as the engine came up to running temperature, and the day warmed up, the characteristics of a 30 weight oil would ...

6. Motor oil - Wikipedia

   en.wikipedia.org/wiki/Motor_oil

   Pouring fresh motor oil into an engine Quart ... sometimes with up to 20% by weight of esters for ... recommended viscosities had moved down to 5W-30, primarily to ...

7. Shell Rotella - Wikipedia

   en.wikipedia.org/wiki/Shell_Rotella

   Multigrade synthetic oil—in SAE 5W-40 and 15w-40 viscosity ranges [3] Single grade conventional oil—in SAE 20, 30, 40 and 50; Synthetic blend oil; Shell is marketing their new CJ-4/SM oil as "Triple Protection," meaning it provides enhanced qualities for engine wear, soot control and engine cleanliness.