STP

NASCAR additive

• ___ Oil Treatment

• 'It's the racer's edge'

• 'The Racer's Edge'

• Interstate Love Song band, for short

• Plush rockers (Abbr.)

• The Racer's Edge product

• The Racer's Edge sloganeer

• 1985 Union Carbide acquisition

• 1999 Clorox acquisition

• 273 K, 1 atm

• 500 initials

• 500 letters

• 60's-70's hallucinogen

• Additive at Indy

• Additive sold at Pep Boys

• Additive that once sponsored Richard Petty

• Additive that sponsors NASCAR racers

• Andy's additive

• Andy's auto additive

• Auto additive

• Auto additive brand

• Auto additive letters

• Auto additive product

• Auto additives co. that hints at this puzzle's theme

• Auto fluid ltrs.

• Auto maintenance letters

• Auto-additive initials

• Auto-racer sponsor

• Auto-racing sponsor

• AutoZone purchase

• Big car racer sponsor

• Big Indy 500 advertiser

• Big initials at Indy

• Big initials in auto products

• Big inits. at Indy

• Big inits. in fuel additives

• Big letters in racing

• Big name at Indy

• Big name in auto additives

• Big name in auto products

• Big name in fuel additives

• Big name in gas treatments

• Big Nascar advertiser

• Big race sponsor

• Brake fluid brand

• Brand at a gas station

• Brand for a gearhead

• Brand known as the racer's edge

• Brand of motor oil additive

• Brand of octane booster

• Brand of power steering fluid

• Brand owned by Clorox

• Brand promoted by Richard Petty

• Car care product

• Certain edge

• Clorox brand

• Crankcase additive

• Daytona 500 advertiser

• Daytona additive

• DeLeo brothers band (Abbr.)

• Dura Lube alternative

• Engine additive

• Engine additive brand

• Engine additive letters

• Engine additive: Abbr.

• Engine goo

• Engine performance aid

• Engine Stop Leak maker

• Engine-cleaning brand

• Frequent race-car sponsor

• Fuel additive

• Fuel additive brand

• Fuel additive on the NASCAR circuit

• Fuel-line initials

• Gas additive

• Gas additive brand

• Gas station display

• Gas station product

• Gas tank additive

• Gas treatment letters

• Gas-additive letters

• Gas-line additive

• Gasoline-additive initials

• Granatelli canful

• Granatelli's additive

• GTO booster

• Hallucinogen

• Havoline competitor

• Havoline rival

• Iconic Nascar sponsor

• Indy 500 advertiser

• Indy 500 advertiser The Racer's Edge

• Indy 500 inits.

• Indy 500 letters

• Indy 500 logo

• Indy 500 sponsor

• Indy additive

• Indy initials

• Indy inits.

• Indy letters

• Indy racer sponsor

• Indy sponsor

• Indy supplement

• Initials on a Nascar car

• Initials seen at Nascar events

• Inits. at a gas station

• It once had a jingle with the line One little can will keep you running free

• Its slogan is The Racer's Edge

• Letters at a Nascar race

• Letters at Indy

• Letters in a red oval

• Letters in racing

• Letters on some race cars

• Logo on many a Richard Petty race car

• Logo on some NASCAR autos

• Logo seen on Indy cars

• Long time NASCAR sponsor

• Long-time Richard Petty sponsor

• Longtime sponsor in NASCAR events

• Longtime sponsor of Nascar racers

• Lube letters

• Major car-racing sponsor

• Major NASCAR sponsor

• Maker of fuel additives

• Maker of Son of a Gun! car care products

• Maker of Son of a Gun! Protectant

• Mescaline rel.

• Motor additive

• Motor additive brand

• Motor additive logo

• Motor fuel additive

• Motor oil additive

• Motor oil additive brand

• Motor oil brand

• Motor Up alternative

• Motor vehicle additive

• Motor-oil & gasoline additive brand (1,1,1)

• Motorsports brand

• Name on an oval

• NAPA buy

• NAPA purchase

• NASCAR advertiser

• Nascar sponsor

• NASCAR sponsor since 1970

• NASCAR supplier

• NASCAR-sponsoring additive

• NASCAR-sponsoring gas additive brand

• Noted NASCAR sponsor

• Octane Booster brand

• Oil additive

• Oil additive letters

• Oil additive since 1954

• Oil or gas additive

• Oil product introduced in St. Joseph, Mo.

• Oil treatment inits.

• Oil treatment letters

• One of racer John Andretti's sponsors

• Onetime sponsor of Richard Petty and Mario Andretti

• P.O. item

• Pennzoil alternative

• Pep Boys buy

• Pep Boys purchase

• Petty associate

• Petty cash source, once

• Petty cash source?

• Petty cash supplier?

• Petty sponsor

• Pit stop can

• Pit stop letters

• Pit stop product

• Pit stop stuff

• Popular additive

• Popular Formula One formula briefly

• Popular fuel additive

• Popular fuel additive brand

• Popular oil additive

• Potent hallucinogen

• Product at a gas station

• Product made by Armor All

• Product with the old jingle line One little can will keep you running free

• Prominent NASCAR sponsor

• Prominent sponsor of Richard Petty's #43 car

• Race car sponsor

• Race sponsor

• Racecar additive

• Racecar fuel additive

• Racer's 500 sponsor

• Racer's sponsor

• Racer's sponsor, perhaps

• Racetrack logo

• Racing car product

• Racing initials

• Racing letters

• Reunited Scott Weiland band, briefly

• Richard Petty sponsor

• Scott Weiland's band, briefly

• Scott Weiland's band, for short

• Sister brand of Armor All

• Slick 50 alternative

• Slick 50 competitor

• Slick 50 rival

• Son of a Gun! Protectant maker

• Speedway letters

• Speedway logo

• Sponsor at Indy

• Sponsor at some NHRA events

• Sponsor initials at Indy

• Sponsor of some NASCAR drivers

• Standard conditions

• Talladega decal

• Tank addition

• The Racer s Edge?

• The racer's edge, commercially

• Valvoline alternative

• Winter Maintenance Formula maker

• Standard temperature and pressure