- STP
- Oil-treatment letters
- Car product that once advertised itself as a "non-friction best seller"
- Gas additive
- The Racer's Edge
- Engine additive
- Big name in fuel additives
- Big Nascar sponsor
- Motor oil brand
- Richard Petty sponsor
- Indy sponsor
- NASCAR sponsor
- Automotive brand paired with Armor All
- Popular oil additive
- Plush band, initally
- Plush rock band, initially
- Brand name treatment for your 59-Down
- Brand of octane booster
- Car care product that sponsors NASCAR
- Engine-cleaning brand
- Long-time Richard Petty sponsor
- Maker of Son of a Gun! Protectant
- Son of a Gun! Protectant manufacturer
- Ultra 5-In-1 Fuel System Cleaner brand
- Helping Engines Run Better Longer Since 1954 product
- Car care brand in an oval logo
- Longtime sponsor of Richard Petty
- Lubricant with an oval logo
- Gasoline-additive initials
- Fuel additive
- Oil treatment inits.
- Big Bang Baby band, for short
- Super Concentrated Gas Treatment maker
- Motor-oil additive
- Indy 500 letters
- Gas additive brand
- The Racer's Edge letters
- Indy 500 advertiser
- Logo seen on Indy cars
- Longtime sponsor of Nascar racers
- 500 letters?
- Fuel additive brand
- Initials seen at Nascar events
- Iconic Nascar sponsor
- Longtime Indy sponsor
- Racing sponsor founded in 7 Down
- Lady Picture Show band, for short
- Armored AutoGroup brand
- Onetime Studebaker-owned brand
- A 1960s print ad for it read "Spare the rods"
- Big name in lubricants
- Sponsor of Nascar's Gas Booster 500
- Big name in power steering fluid
- Brand with an old ad reading "New car insurance... only $1.35"
- Its logo is its name in a red oval
- Science. Technology. Performance. brand
- Letters on many old trucker hats
- Brand associated with many drag events
- Equatorial African island nation, for short
- Letters on some old greasy hats
- Auto additive product
- Indy 500 sponsor
- Big initials in auto products
- Motor fuel additive
- One of racer John Andretti's sponsors
- Andy's auto additive
- Indy additive
- Oil additive letters
- Oil additive
- Indy supplement
- Petty cash supplier?
- Pit stop product
- Popular fuel additive
- Pit stop letters
- Racing letters
- Daytona 500 advertiser
- Gas tank additive
- Oil additive since 1954
- Sponsor of some NASCAR drivers
- Big name in auto products
- NASCAR sponsor since 1970
- NASCAR sponsor since 1971
- Octane Booster brand
- Havoline rival
- Lube letters
- Motorsports brand
- Big initials at Indy
- Longtime NASCAR sponsor
- The racer's edge, commercially
- Big name in gas treatments
- Indy letters
- Automotive brand with a red oval logo
- Logo seen at the Indy 500
- Auto maintenance letters
- Big name in auto additives
- Engine performance aid
- It once had a jingle with the line "One little can will keep you running free"
- Engine additive brand
- NASCAR advertiser
- Brand known as "The racer's edge"
- Sponsor initials at Indy
- GTO booster
- Granatelli's additive
- Oil product introduced in St. Joseph, Mo.
- Petty associate
- Gas treatment letters
- 1985 Union Carbide acquisition
- Additive at Indy
- Additive sold at Pep Boys
- Auto additives co. that hints at this puzzle's theme
- Letters at Indy
- Logo on many a Richard Petty race car
- Longtime sponsor in NASCAR events
- Sponsor at some NHRA events
- Additive sold at AutoZone
- Gas additive letters
- Longtime auto racing sponsor
- Lucas Oil competitor
- Initials seen at Indy
- Son of a Gun! vinyl protectant maker
- Auto performance brand
- Indy initials
- Racetrack letters
- Brake fluid brand
- AutoZone brand
- Auto additive with a mostly red oval logo
- Brand sold at Pep Boys
- Car care brand
- Indy brand
- Frequent auto race sponsor
- Oil additive brand
- Indy 500 initialism
- Auto additive with a red oval logo
- Big racing sponsor
- Initials on some Indy cars
- Valvoline rival
- Pit stop brand
- Racecar sponsor
- Gas-line additive
- Havoline competitor
- Fuel-line initials
- Engine additive letters
- Auto additive
- Motor additive
- Letters on some race cars
- Major car-racing sponsor
- Racer's 500 sponsor
- Auto-racing sponsor
- Auto-racer sponsor
- Clorox brand
- Auto-additive initials
- Son of a Gun! Protectant maker
- Auto additive letters
- Logo seen on race cars
- Major NASCAR sponsor
- Fuel additive letters
- Part of the Armored AutoGroup
- Clorox's car-product brand
- Motor treatment letters
- Helping Engines Run Better sloganeer
- Ethanol fuel system treatment brand
- Brand in a "non-friction best seller" ad
- It's "inside every great machine"
- Valvoline competitor
- Oil Stabilizer maker
- Pennzoil rival
- Common race-car decal
- Treatment for fuel injectors
- What adorns many Indy cars
- Science. Technology. Performance. sloganeer
- Letters on Octane Booster
- Brand of protectant products
- Oil Stabilizer brand
- Engine Stop Leak maker
- Petty sponsor
- Racecar additive
- Tank addition
- NASCAR supplier
- Racetrack logo
- AutoZone purchase
- Pep Boys purchase
- Petty cash source?
- Brand of power steering fluid
- Brand owned by Clorox
- Maker of Son of a Gun! car care products
- Fuel additive on the NASCAR circuit
- Petty cash source, once
- Sister brand of Armor All
- Theologian's degree.
- Imprinted: Abbr.
- Gummed item: Abbr.
- Postal item: Abbr.
- Postage item: Abbr.
- P.O. item
- Condescend
- Potent hallucinogen
- Post-off. item
- Gas station display
- lndy 500 advertiser
- Engine additive: Abbr.
- Popular Formula One formula
- 60's-70's hallucinogen
- Racing car product
- Big Indy 500 advertiser
- Big Nascar advertiser
- Gas station product
- Indy 500 logo
- Product made by Armor All
- The Racer's Edge sloganeer
- Car care product
- Certain "edge"
- Dura Lube alternative
- Initials on a Nascar car
- Racing initials
- Crankcase additive
- Inits. at a gas station
- Its slogan is "The Racer's Edge"
- Letters at a Nascar race
- Pit stop can
- Big race sponsor
- Brand of motor oil additive
- Indy racer sponsor
- Name on an oval
- Race sponsor
- Big letters in racing
- Product at a gas station
- Speedway letters
- Sponsor at Indy
- Big car racer sponsor
- Big inits. at Indy
- Motor Up alternative
- Product with the old jingle line "One little can will keep you running free"
- 1999 Clorox acquisition
- Brand at a gas station
- Indy 500 inits.
- Big speedway sponsor
- Canful at a gas station
- Garage brand
- Longtime advertiser at the Indy 500
- Gasoline additive
- Maker of fuel additives
- Onetime sponsor of Richard Petty and Mario Andretti
- Auto additive brand
- Racecar fuel additive
- 500 initials
- Big inits. in fuel additives
- Longtime sponsor of racing's #43 car
- Common Nascar letters
- Gasoline additive brand
- Letters on a track
- ___ 500, annual race in Ridgeway, Va.
- Motor oil choice
- Oomph! degreaser brand
- Pep Boys product
- Pit crew's canful
- The Racer's Edge product
- Brand at the Daytona 500
- Letters on many a racecar
- Racer's brand
- Sprint Cup Series sponsor
- Speedway brand
- Big advertiser at auto races
- Big engine additive
- Brand at a garage
- Engine additive since 1954
- Major race sponsor
- Nascar additive
- Pennzoil competitor
- Big brand with an oval logo
- Motor oil product
- Rival of Havoline
- Automotive brand with an oval logo
- Brand sold at gas stations
- Indy inits.
- Popular gas additive
- Brand seen at speedways
- Filling station brand
- Longtime sponsor of 8-Down
- Noted speedway sponsor
- Big name in motor oil
- Brand seen at AutoZone
- Slick 50 alternative
- Slick 50 rival
- Slick 50 competitor
- Motor oil additive brand
- Big Indy inits.
- Brand of brake fluid
- DeLeo brothers band (Abbr.)
- Brand of fuel additives
- Gas Booster brand
- Plush rockers (Abbr.)
- Wicked Garden rockers (Abbr.)
- Interstate Love Song band, briefly
- Had smash debut "Core" (abbr.)
- Scott Weiland band (abbr.)
- Purple band (abbr.)
- Scott Weiland band, for short
- Longtime sponsor of Petty Enterprises
- Band with the nineties hit "Creep," to fans
- Brand once owned by the Studebaker Corporation
- Rival of Pennzoil and Havoline
- Indy 500 advertiser "The Racer's Edge"
- Noted NASCAR sponsor
- Additive that sponsors NASCAR racers
- Popular fuel additive brand
- The Racer's Edge Indy sponsor
- The Racer's Edge brand
- Common fuel additive
- NASCAR brand
- Popular engine additive
- Indy 500 initials
- Race car driver's additive
- Major motor oil brand
- Big Indy 500 sponsor
- Mescaline rel.
- Hallucinogen
- Auto fluid ltrs.
- Popular Formula One formula briefly
- Racer's sponsor
- Big name at Indy
- Brand for a gearhead
- Additive sold at Napa
- Oil treatment brand
- Additive sold at Napa Auto Parts
- Name in fuel additives
- Oil treatment brand since 1954
- Gas treatment brand
- Pennzoil alternative
- Pep Boys buy
- Letters in racing
- Letters in a red oval
- Winter Maintenance Formula maker
- NAPA buy
- Auto lubricant letters
- Brand promoted by Richard Petty
- Auto lubricant brand found in "exhaust pipes"
- Racer's sponsor, perhaps
- Logo on some NASCAR autos
- Pit stop stuff
- Talladega decal
- Exorbitant
- Brand promoted by Andy Granatelli
- Brand advertised on many Nascar autos
- Brand on many an auto racer's jacket
- Talladega decal letters
- Inside every great machine brand
- Its early cans were labeled "Today's Modern Oil Treatment"
- Brand at the Indy 500
- Letters on many Nascar cars
- Motor oil letters
- Racing Series Octane Booster maker
- Auto shop inits.
- Sponsor of many racers
- Letters on Richard Petty's car
- Brand in the lyrics to "Slide Some Oil to Me" from "The Wiz"
- Frequent Nascar sponsor
- Speedway sponsor
- Sponsor of some racers
