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...
Last edited by dogememe; 07/13/18 10:51 AM.
2007 Crown Vic P71 4.6 ~126K Miles, Royal Purple HPS 5W-30, Royal Purple Filter, Daily Driver, 5K OCIs.
2010 Escape FWD 2.5 ~84K Miles, Castrol Edge EP 5W-30, Wix Filter, Rented on Turo, 10-15K OCIs.