5w4 so/sp
5w4 so/sx
5w4 sp/so
5w4 sp/sx
5w4 sx/so
5w4 sx/sp
5w6 so/sp
5w6 so/sx
5w6 sp/so
5w6 sp/sx
5w6 sx/so
5w6 sx/sp
other; please specify.