I have compiled some info. from these MSDSs. Japanese MSDSs differ from the USA versions at least partly due to different reporting requirements, which is of benefit to us. There are some interesting things shown in the info. The percentage of mineral in the different viscosity grades is one of them. Of note is that only 0W-40 of this set uses the slack wax-type of Group III which is what Shell uses in many of their synthetic motor oils. The most shocking thing is the kerosene tainting the 0W-40 grade. I have looked at many other MSDSs for various Mobil 1 oils but have not included anything on them. Some that I saw had only 5-10% mineral oil.
Mobil 1 Japanese MSDSs: http://www.msds.exxonmobil.com/psims/psims.aspx
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0W-40 – Revised Dec 31, 2008
KEROSENE...0.1-1 %weight...What the
SLACK WAX (PETROLEUM), HYDROTREATED...50-60 %weight
Mineral Oil...5-10 %weight
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5W-40 – Revised Nov 6, 2007
Mineral Oil...30-40 %weight
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0W-30 – Revised Nov 7, 2007
Mineral Oil...10-20 %weight
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5W-30 – Revised Nov 14, 2007
Mineral Oil...40-50 %weight
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10W-30 – Revised Dec 21, 2007
Mineral Oil...50-60 %weight
Mobil 1 Japanese MSDSs: http://www.msds.exxonmobil.com/psims/psims.aspx
____________________________________________________
0W-40 – Revised Dec 31, 2008
KEROSENE...0.1-1 %weight...What the
SLACK WAX (PETROLEUM), HYDROTREATED...50-60 %weight
Mineral Oil...5-10 %weight
_____________________________________________________
5W-40 – Revised Nov 6, 2007
Mineral Oil...30-40 %weight
_____________________________________________________
0W-30 – Revised Nov 7, 2007
Mineral Oil...10-20 %weight
_____________________________________________________
5W-30 – Revised Nov 14, 2007
Mineral Oil...40-50 %weight
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10W-30 – Revised Dec 21, 2007
Mineral Oil...50-60 %weight