| Burns out | 9 |
| Bites the dust | 14 |
| "___ Irae" | 20 |
| Withers away | 12 |
| What a battery does, eventually | 31 |
| Subsides gradually (with "down") | 42 |
| Subsides gradually | 18 |
| Stops working, as a battery | 27 |
| Stamping forms | 14 |
| Shuffles off this mortal coil | 29 |
| Sheryl Crow "Tomorrow Never ___" | 42 |
| Seeker of subversives: 1938–44 | 37 |
| Quiets (down) | 13 |
| Mint punches | 12 |
| Mint hardware | 13 |
| Mint devices | 12 |
| Medieval hymn start | 19 |
| Martin ___, U.S. politico | 25 |
| Loses in a videogame, often | 27 |
| Loses energy, as a battery | 26 |
| Loses all power | 15 |
| Heads to the last roundup | 25 |
| Goes phhht! | 11 |
| Goes pfffft | 11 |
| Goes flat, as a car battery | 27 |
| Goes "pfft" | 21 |
| Gives up the ghost | 18 |
| Flops, as a play | 16 |
| Flops at the box office | 23 |
| Fizzles, as a fire | 18 |
| Fades, with "down" | 28 |
| Fades gradually | 15 |
| Earl Scruggs "True Love Never ___" | 44 |
| Daylight ___ (melodic death/doom band) | 38 |
| Christie's "Lord Edgeware ___" | 44 |
| Ceases to live | 14 |
| Bombs, at the comedy club | 25 |
| Bombs on stage | 14 |
| Beckett's "Malone ___" | 36 |
| A day in Livy's life | 24 |
| "___ Irae" (Latin hymn) | 33 |
| "___ Irae," ancient hymn | 34 |
| "__ Irae" | 19 |
| " . . . many a summer ___ the swan" | 45 |
| ___ non (judge's holiday) | 29 |
| ___ infaustus (unlucky day) | 27 |
| Engine type | 11 |
| Engine | 6 |
| Inventor of the compression-ignition engine | 43 |
| Kind of engine | 14 |
| Truck stop offering | 19 |
| Semi fuel | 9 |
| Kind of fuel | 12 |
| Pump option | 11 |
| Truck fuel | 10 |
| Gas pump option | 15 |
| Type of fuel | 12 |
| Big rig fuel | 12 |
| Type of locomotive | 18 |
| Semi filler | 11 |
| Pump choice | 11 |
| Petroleum derivative | 20 |
| Truck engine | 12 |
| Semi-filling liquid | 19 |
| Pump selection | 14 |
| Gas station choice | 18 |
| Fuel for big rigs | 17 |
| Filling station buy | 19 |
| Engine inventor | 15 |
| Actor Vin | 9 |
| Truckers' fuel | 18 |
| Rig fuel | 8 |
| Oil burner | 10 |
| Motor ship driver | 17 |
| Many a truck engine | 19 |
| Jeans brand since 1978 | 22 |
| Italian jeans designer | 22 |
| Inventor Rudolf | 15 |
| Inventor of an eponymous engine | 31 |
| His engine is useful | 20 |
| Gas station option | 18 |
| Fuel type | 9 |
| Engine style | 12 |
| Engine or fuel | 14 |
| Engine genre | 12 |
| Engine for a semi | 17 |
| Engine eponym | 13 |
| Big vehicle's need | 22 |
| Automotive engineer Rudolf | 26 |
| 19th C. engine engineer | 23 |
| "xXx" star Vin | 24 |
| "The Pacifier" star Vin | 33 |
| Some engines | 12 |
| Engines | 7 |
| Some big engines | 16 |
| Types of trains or trucks | 25 |
| Truck stop choices | 18 |
| Some locomotives | 16 |
| Some buses | 10 |
| Semi drivers? | 13 |