For a second I thought you mean STP like STP Oil Treatment. If you read the sticker you posted, it's SPT. I don't think they call it that anymore...
Edited by dogememe (07/13/18 10:51 AM)
1997 Suburban 5.7 ~214K Miles, VWB 5W-30, VO-55, Personal.
2007 Crown Vic P71 4.6 ~124K Miles, VAS 5W-30, RP 20-820, Personal.
2010 Escape 2.5 ~73K Miles, VAS 5W-30, Wix 51348, Rented on Turo.