| Prominent NASCAR sponsor | 24 |
| Product with the old jingle line "One little can will keep you running free" | 86 |
| Product made by Armor All | 25 |
| Product at a gas station | 24 |
| Potent hallucinogen | 19 |
| Postage item: Abbr. | 19 |
| Post-off. item | 14 |
| Popular fuel additive brand | 27 |
| Popular fuel additive | 21 |
| Popular Formula One formula briefly | 36 |
| Pit stop letters | 16 |
| Pit stop can | 12 |
| Petty cash source? | 18 |
| Petty cash source, once | 23 |
| Onetime sponsor of Richard Petty and Mario Andretti | 51 |
| Oil-treatment letters | 21 |
| Oil treatment letters | 21 |
| Oil additive since 1954 | 23 |
| Noted NASCAR sponsor | 20 |
| NASCAR supplier | 15 |
| NASCAR sponsor since 1970 | 25 |
| Name on an oval | 15 |
| Motor-oil additive | 18 |
| Motor Up alternative | 20 |
| Motor treatment letters | 23 |
| Motor oil brand | 15 |
| Motor additive brand | 20 |
| Mescaline rel. | 14 |
| Maker of Son of a Gun! Protectant | 33 |
| Maker of Son of a Gun! car care products | 40 |
| Maker of fuel additives | 23 |
| Major NASCAR sponsor | 20 |
| Lube letters | 12 |
| Longtime sponsor of Richard Petty | 33 |
| Longtime sponsor of racing's #43 car | 40 |
| Longtime auto racing sponsor | 28 |
| Long-time Richard Petty sponsor | 31 |
| Logo seen on race cars | 22 |
| Logo seen at the Indy 500 | 25 |
| Logo on some NASCAR autos | 25 |
| Logo on many a Richard Petty race car | 37 |
| lndy 500 advertiser | 19 |
| Letters on a track | 18 |
| Letters at a Nascar race | 24 |
| Its slogan is "The Racer's Edge" | 46 |
| It once had a jingle with the line "One little can will keep you running free" | 88 |
| Inits. at a gas station | 23 |
| Initials seen at Indy | 21 |
| Initials on a Nascar car | 24 |
| Indy supplement | 15 |
| Indy racer sponsor | 18 |
| Indy initials | 13 |
| Indy 500 inits. | 15 |
| Iconic Nascar sponsor | 21 |
| Havoline rival | 14 |
| Havoline competitor | 19 |
| Had smash debut "Core" (abbr.) | 40 |
| Gasoline additive brand | 23 |
| Gas-tank additive | 17 |
| Gas treatment letters | 21 |
| Gas station product | 19 |
| Gas station display | 19 |
| Gas additive letters | 20 |
| Fuel additive on the NASCAR circuit | 35 |
| Fuel additive letters | 21 |
| Engine performance aid | 22 |
| Engine oil additive | 20 |
| Engine additive letters | 23 |
| DeLeo brothers band (Abbr.) | 27 |
| Daytona 500 advertiser | 22 |
| Common Nascar letters | 21 |
| Certain "edge" | 24 |
| Car care product that sponsors NASCAR | 37 |
| Car care product | 16 |
| Brand of power steering fluid | 29 |
| Brand of brake fluid | 20 |
| Brand known as "the racer's edge" | 47 |
| Brand at a gas station | 22 |
| Brake fluid brand | 17 |
| Big Nascar advertiser | 21 |
| Big name in gas treatments | 26 |
| Big name in auto additives | 26 |
| Big inits. at Indy | 18 |
| Big Indy inits. | 15 |
| Big Indy 500 advertiser | 23 |
| Big car racer sponsor | 21 |
| AutoZone purchase | 17 |
| Automotive brand with a red oval logo | 37 |
| Auto-racing sponsor | 19 |
| Auto-racer sponsor | 18 |
| Auto-additive initials | 22 |
| Auto oil additive | 17 |
| Auto fluid ltrs. | 16 |
| Auto engine conditioner | 23 |
| Auto engine additive | 20 |
| Auto additives co. that hints at this puzzle's theme | 56 |
| Auto additive with a red oval logo | 34 |
| Auto additive letters | 21 |
| Auto additive brand | 19 |
| Armored AutoGroup brand | 23 |