Another oil question SG

[steelblue75]

Can someone tell me what the oil desinegation SG stands for.
Thanks,George

 

[aboatguy]

This is off of the web:

Performance Ratings
The following Category/Status/Service list indicates the performance ratings:

SM — Current — For all automotive engines presently in use.

SL — Current — For 2004 and older automotive engines.

SJ — Current — For 2001 and older automotive engines.

SH — Obsolete — For 1996 and older engines.

SG — Obsolete — For 1993 and older engines.

SF — Obsolete — For 1988 and older engines.

SE — Obsolete — For 1979 and older engines.

SD — Obsolete — For 1971 and older engines.

SC — Obsolete — For 1967 and older engines.

SB — Obsolete — For older engines.

SA — Obsolete — For older engines.

The two oldest categories, "SB" and "SA," should be used only when specifically recommended by the manufacturer. Realistically, if you go shopping at the local auto parts store, you will probably find only oil with the latest ratings. And for those of you with diesel engines, there is a separate rating system, starting with the letter "C." The diesel ratings are more involved, so it's best to consult your owner's manual or operating manual to make sure you have the correct oil in the crankcase.

 

[steelblue75]

Thanks very much for the info. aboatguy.