for further details check out: http://www.performanceoiltechnology.com/saeviscosityclassificationsandmanf.requirements.htm
Manufacturers mix various oils to make an 'SAE 40' oil product. Such a mixture will not have a molecular weight.
Sae-20w
SAE stands for Society of Automotive Engineers. Sae ratings pertain to the oils Viscosity. Viscosity is the flowability (resistance to flow) at a particular temperature.
SAE is an acronym for the "Society of Automotive Engineers" and when used in conjunction with tool grade or measurement (not oil), is a standardized unit of non-metric measurement. Simply put, in measurements it means "Non-Metric". The name "SAE" used to grade motor oil has a totally different meaning, although instituted by the same society.
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SAE 40 has a higher viscosity.
SAE 40 has a higher viscosity.
Manufacturers mix various oils to make an 'SAE 40' oil product. Such a mixture will not have a molecular weight.
SAE 30 motor oil if the temperature is between 30 & 75°F.Colder use SAE 10 oil.Warmer use SAE 40 oil.
No ( according to the owners manual that came with my Ariens lawnmower ( with a Kohler engine ) SAE 30 if above 40* Fahrenheit SAE 10W-30 if below 40* Fahrenheit
sae document j300 defines the highest single grade as 60. this is in reference to viscosity and not the quality of the oil
no
10 40 sae
10/40 sae
Sae 10w-40
Type: SAE 10W-30, SAE 10W-40, SAE 20W-40 or SAE 20W-50 Recommended engine oil grade: API service SG type or higher, JASO standard MA Engine oil quantity: Periodic oil change: 1.00 L (1.06 US qt) (0.88 Imp.qt)
NO, not in any lawnmower made in the last 40 years. Use SAE 30 or SAE 10W30 detergent oil.