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ZDan · 03-16-2012, 08:14 AM

Multi-vis oil is NOT thinner at lower temperatures.
What 0W20 really means is:
At 0degrees C, 0W20 will have the viscosity that a 0 straight-weight oil would have at that temperature.
At 100degrees C, 0W20 will have the viscosity of a 20 straight-weight oil would have at that temperature.

A 0-weight oil is thicker at 0C than a 20-weight oil is at 100C.

http://www.mobil.com/USA-English/Lub...l_Economy.aspx

Note that Mobil1 0W20 is 5X thicker (more viscous) at 40C than at 100C.

Multivis oils are still MUCH thinner at temperature! Just not as much so as straight-weight oils are.

03-16-2012, 08:14 AM	#73
ZDan Senior Member Join Date: May 2011 Drives: '23 BRZ Location: Providence, RI Posts: 4,672 Thanks: 1,439 Thanked 4,011 Times in 2,097 Posts Mentioned: 85 Post(s) Tagged: 0 Thread(s)	Multi-vis oil is NOT thinner at lower temperatures. What 0W20 really means is: At 0degrees C, 0W20 will have the viscosity that a 0 straight-weight oil would have at that temperature. At 100degrees C, 0W20 will have the viscosity of a 20 straight-weight oil would have at that temperature. A 0-weight oil is thicker at 0C than a 20-weight oil is at 100C. http://www.mobil.com/USA-English/Lub...l_Economy.aspx Note that Mobil1 0W20 is 5X thicker (more viscous) at 40C than at 100C. Multivis oils are still MUCH thinner at temperature! Just not as much so as straight-weight oils are.