| STP | "Inside every great machine" brand |
| STP | "Interstate Love Song" band, for fans |
| STP | "Multipurpose Motor Treatment" brand |
| STP | "Racer's Edge" motor oil |
| STP | "The Racer's Edge" |
| STP | "The Racer's Edge" brand |
| STP | "The Racer's Edge" fuel additive |
| STP | "The Racer's Edge" product |
| STP | "The Racer's Edge" sloganeer |
| STP | "The racer's edge" |
| STP | "The racer's edge" brand |
| STP | "The racer's edge" fuel additive |
| STP | "The racer's edge" gas additive brand |
| STP | "The racer's edge" octane booster brand |
| STP | ''Science. Technology. Performance.'' sloganeer |
| STP | 1999 Clorox acquisition |
| STP | 500 initials |
| STP | 500 letters |
| STP | 500 letters? |
| STP | 60's-70's hallucinogen |
| STP | Acronym for standard temperature and pressure |
| STP | Additive brand used in auto racing |
| STP | Additive owned by Armored AutoGroup |
| STP | Additive sold at AutoZone |
| STP | Additive sold at NAPA |
| STP | Additive sold at Napa |
| STP | Additive sold at Napa Auto Parts |
| STP | Auto additive brand |
| STP | Auto additive with a mostly red oval logo |
| STP | Auto additive with a red oval logo |
| STP | Auto garage brand |
| STP | Auto lubricant brand found in "exhaust pipes" |
| STP | Auto lubricant brand owned by Energizer |
| STP | Auto lubricant letters |
| STP | Auto products brand |
| STP | Auto shop inits. |
| STP | AutoZone brand |
| STP | Automotive additive brand |
| STP | Automotive brand that's a longtime NASCAR sponsor |
| STP | Automotive brand that's a longtime sponsor of auto racing |
| STP | Automotive brand with an oval logo |
| STP | Automotive performance brand: Abbr. |
| STP | Big Indy 500 advertiser |
| STP | Big Nascar advertiser |
| STP | Big Nascar sponsor |
| STP | Big advertiser at auto races |
| STP | Big brand with an oval logo |
| STP | Big car racer sponsor |
| STP | Big engine additive |
| STP | Big initials at Indy |
| STP | Big inits. at Indy |
| STP | Big inits. in fuel additives |
| STP | Big letters in lubricants |
| STP | Big letters in racing |
| STP | Big name in auto products |
| STP | Big name in fuel additives |
| STP | Big name in motor oil |
| STP | Big race sponsor |
| STP | Big racing sponsor |
| STP | Big speedway sponsor |
| STP | Brake fluid brand |
| STP | Brand at a garage |
| STP | Brand at a gas station |
| STP | Brand at the Daytona 500 |
| STP | Brand at the Indy 500 |
| STP | Brand in a ''non-friction best seller'' ad |
| STP | Brand in the lyrics to "Slide Some Oil to Me" from "The Wiz" |
| STP | Brand letters on some NASCAR fans' caps |
| STP | Brand name on some NASCAR caps |
| STP | Brand of automotive additive |
| STP | Brand of engine additive |
| STP | Brand of fuel additive |
| STP | Brand of fuel additives |
| STP | Brand of motor oil |
| STP | Brand of motor oil additive |
| STP | Brand of octane booster |
| STP | Brand of power steering fluid |
| STP | Brand of protectant products |
| STP | Brand often seen on a race car decal |
| STP | Brand on many auto-racing decals |
| STP | Brand seen at AutoZone |
| STP | Brand seen at speedways |
| STP | Brand seen on Indy 500 signs |
| STP | Brand sold at Pep Boys |
| STP | Brand sold at gas stations |
| STP | Brand that makes Gas Treatment and Octane Booster |
| STP | Brand that sells Ceramic Oil Treatment for cars |
| STP | Brand that sells motor oil and brake fluid |
| STP | Canful at a gas station |
| STP | Car care brand |
| STP | Car care product |
| STP | Certain "edge" |
| STP | Common Nascar letters |
| STP | Common race-car decal |
| STP | Company name on some NASCAR fan attire |
| STP | Crankcase additive |
| STP | Dura Lube alternative |
| STP | Engine Stop Leak brand |
| STP | Engine additive |
| STP | Engine additive and NASCAR sponsor |
| STP | Engine additive brand |
| STP | Engine additive brand since 1954 |
| STP | Engine additive known as "the racer's edge" |
| STP | Engine additive letters |
| STP | Engine additive since 1954 |
| STP | Engine additive since 1954: Abbr. |
| STP | Engine additive which was a longtime sponsor in NASCAR events |
| STP | Engine additive whose decal is on many race cars |
| STP | Engine additive with the slogan "the racer's edge" |
| STP | Engine additive: Abbr. |
| STP | Engine oil brand |
| STP | Engine oil brand letters |
| STP | Engine-cleaning brand |
| STP | F1 additive |
| STP | Filling station brand |
| STP | Frequent Nascar sponsor |
| STP | Frequent auto race sponsor |
| STP | Fuel additive |
| STP | Fuel additive brand |
| STP | Fuel additive brand name on some NASCAR gear |
| STP | Fuel additive brand that sponsors NASCAR |
| STP | Fuel additive brand that sponsors many auto racing events |
| STP | Fuel additive brand that's a major NASCAR sponsor |
| STP | Fuel additive brand with an oval logo |
| STP | Fuel additive brand: Abbr. |
| STP | Fuel additive known as "the racer's edge" |
| STP | Fuel additive letters |
| STP | Fuel additive name on some NASCAR gear |
| STP | Fuel additive that's a longtime NASCAR sponsor |
| STP | Fuel additive with the slogan "the racer's edge" |
| STP | Fuel and oil additive brand that's a major NASCAR sponsor |
| STP | Fuel line letters |
| STP | Garage brand |
| STP | Gas additive and NASCAR sponsor |
| STP | Gas additive brand |
| STP | Gas additive brand that sponsors a NASCAR race at a Virginia track |
| STP | Gas additive brand that's a longtime NASCAR sponsor |
| STP | Gas additive brand: Abbr. |
| STP | Gas additive letters |
| STP | Gas additive sold at Pep Boys |
| STP | Gas station display |
| STP | Gas station product |
| STP | Gas tank additive |
| STP | Gas treatment brand |
| STP | Gasoline additive |
| STP | Gasoline additive brand |
| STP | Gas-line liquid brand |
| STP | Gas-tank additive |
| STP | Grunge band that recently reissued "Tiny Music...Songs From the Vatican Gift Shop," for short |
| STP | Indy 500 advertiser |
| STP | Indy 500 initialism |
| STP | Indy 500 inits. |
| STP | Indy 500 letters |
| STP | Indy 500 logo |
| STP | Indy 500 sponsor |
| STP | Indy additive |
| STP | Indy brand |
| STP | Indy initials |
| STP | Indy inits. |
| STP | Indy label |
| STP | Indy letters |
| STP | Indy racer sponsor |
| STP | Indy sponsor |
| STP | Initialism for "standard temperature and pressure" |
| STP | Initialism for standard temperature and pressure |
| STP | Initials on a Nascar car |
| STP | Initials on some Indy cars |
| STP | Inits. at Indy |
| STP | Inits. at a gas station |
| STP | It's ''inside every great machine'' |
| STP | Its early cans were labeled "Today's Modern Oil Treatment" |
| STP | Its slogan is "The Racer's Edge" |
| STP | Letters at Indy |
| STP | Letters at a Nascar race |
| STP | Letters on Octane Booster |
| STP | Letters on Richard Petty's car |
| STP | Letters on a track |
| STP | Letters on many Nascar cars |
| STP | Letters on many a racecar |
| STP | Letters on some racers' uniforms |
| STP | Logo that Bubba Wallace has prominently displayed on his #43 Chevrolet Camaro ZL1 |
| STP | Longtime NASCAR sponsor |
| STP | Longtime Nascar sponsor |
| STP | Longtime Richard Petty sponsor |
| STP | Longtime advertiser at the Indy 500 |
| STP | Longtime sponsor of 8-Down |
| STP | Longtime sponsor of Petty Enterprises |
| STP | Longtime sponsor of racing's #43 car |
| STP | Major NASCAR sponsor |
| STP | Major race sponsor |
| STP | Maker of Ceramic Oil Treatment for cars |
| STP | Maker of Complete Fuel System Cleaner |
| STP | Maker of Engine Stop Leak and Synthetic Oil Treatment |
| STP | Maker of Octane Booster and Gas Treatment |
| STP | Maker of Son of a Gun! silicone protectant |
| STP | Maker of Ultra 5 in 1 Fuel System Cleaner |
| STP | Maker of fuel additives |
| STP | Motor Up alternative |
| STP | Motor additive brand that sponsors NASCAR Sprint Cup Series: Abbr. |
| STP | Motor oil additive |
| STP | Motor oil additive brand |
| STP | Motor oil additive letters |
| STP | Motor oil additive: Abbr. |
| STP | Motor oil brand |
| STP | Motor oil brand letters |
| STP | Motor oil brand letters (anagram of "pst") |
| STP | Motor oil brand that sponsored Richard Petty |
| STP | Motor oil brand that sponsored racer Richard Petty |
| STP | Motor oil brand that sponsors NASCAR |
| STP | Motor oil brand that sponsors NASCAR drivers |
| STP | Motor oil brand that's a competitor of Pennzoil |
| STP | Motor oil brand that's a longtime NASCAR sponsor |
| STP | Motor oil brand: Abbr. |
| STP | Motor oil choice |
| STP | Motor oil choice, that's a major NASCAR sponsor |
| STP | Motor oil company |
| STP | Motor oil company that has sponsored race car drivers |
| STP | Motor oil company that is a NASCAR sponsor |
| STP | Motor oil company: Abbr. |
| STP | Motor oil letters |
| STP | Motor oil product |
| STP | Motor oil that advertises at the Indy 500 |
| STP | Motor-oil brand |
| STP | NASCAR advertiser |
| STP | NASCAR gas additive letters |
| STP | NASCAR sponsor |
| STP | Name in fuel additives |
| STP | Name on an oval |
| STP | Nascar additive |
| STP | Nascar sponsor |
| STP | Noted speedway sponsor |
| STP | Octane Booster brand |
| STP | Octane Booster manufacturer |
| STP | Octane booster brand |
| STP | Oil Stabilizer brand |
| STP | Oil Stabilizer maker |
| STP | Oil additive |
| STP | Oil additive brand |
| STP | Oil additive letters |
| STP | Oil additive: Abbr. |
| STP | Oil treatment brand |
| STP | Oil treatment brand since 1954 |
| STP | Oil treatment inits. |
| STP | Onetime sponsor of Richard Petty and Mario Andretti |
| STP | Oomph! degreaser brand |
| STP | Pennzoil alternative |
| STP | Pennzoil competitor |
| STP | Pennzoil competitor: Abbr. |
| STP | Pennzoil rival |
| STP | Pep Boys product |
| STP | Pep Boys purchase |
| STP | Petty cash supplier? |
| STP | Pit crew's canful |
| STP | Pit stop brand |
| STP | Pit stop can |
| STP | Po___one: delay |
| STP | Popular Formula One formula |
| STP | Popular engine additive |
| STP | Popular fuel additive |
| STP | Popular fuel additive letters |
| STP | Popular gas additive |
| STP | Popular motor oil additive: Abbr. |
| STP | Popular motor oil brand: Abbr. |
| STP | Popular oil additive |
| STP | Product at a gas station |
| STP | Product known as "The Racer's Edge" |
| STP | Product made by Armor All |
| STP | Product with the old jingle line "One little can will keep you running free" |
| STP | Race car logo |
| STP | Race car sponsor |
| STP | Race sponsor |
| STP | Racecar fuel additive |
| STP | Racer's brand |
| STP | Racer's sponsor |
| STP | Racing Series Octane Booster maker |
| STP | Racing car product |
| STP | Racing initials |
| STP | Racing letters |
| STP | Rival of Havoline |
| STP | Rival of Pennzoil and Havoline |
| STP | Speedway additive brand |
| STP | Speedway brand |
| STP | Speedway letters |
| STP | Sponsor at Indy |
| STP | Sponsor of many racers |
| STP | Sponsor of some racers |
| STP | Sprint Cup Series sponsor |
| STP | Talladega decal letters |
| STP | The Racer's Edge |
| STP | Three letter American motor oil brand |
| STP | Treatment for fuel injectors |
| STP | Valvoline alternative |
| STP | Valvoline competitor |
| STP | Valvoline rival |
| STP | Valvoline rival brand |
| STP | Valvoline rival: Abbr. |
| STP | What adorns many Indy cars |
| STP | ___ 500 (NASCAR race sponsored by a gas additive brand) |
| STP | ___ 500, annual race in Ridgeway, Va. |
| STP | lndy 500 advertiser |
| STP | “The Racer’s Edge” product |