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 ~127K Miles, RP HPS 5W-30, RP 20-820, Daily Driver.
2010 Escape FWD 2.5 ~90K Miles, Castrol Edge EP 5W-30, Wix 51348, Rented on Turo.