username9

So here is the recommendation for my snow blower's briggs

http://faqs.custhelp.com/cgi-bin/faqs.cfg/php/enduser/std_adp.php?p_faqid=1419&p_created=948406560&p_sid=6X7QqCmj&p_accessibility=0&p_redirect=&p_lva=1419&p_sp=cF9zcmNoPSZwX3NvcnRfYnk9JnBfZ3JpZHNvcnQ9JnBfcm93X2NudD0yODYsMjg2JnBfcHJvZHM9JnBfY2F0cz0mcF9wdj0mcF9jdj0mcF9zZWFyY2hfdHlwZT1hbnN3ZXJzLnNlYXJjaF9ubCZwX3BhZ2U9MQ**&p_li=&p_topview=1

And here is mobil 1 5-30 specs

http://www.mobil.com/USA-English/Lubes/PDS/GLXXENPVLMOMobil1_5W-30.asp

Can someone explain to me what this means? "Use a high quality detergent oil classified "For Service SF, SG, SH, SJ" or higher."

What's mobil 1 classified as? What classification are we talking about, is there a wikipedia page about this?