Technicians at Aurora Auto Wholesalers bolster engines with new swigs of motor oil and prep cars for the cold season with an array of inspections and adjustments. During the 45- to 60-minute service, mechanics replace up to 6 litres of oil. Once a new oil filter is stationed at the engine's defense, techs inspect the air filter, facilitate fluid movements by lubricating locks, latches, and hinges, and take a tour from one fluid reservoir to the next to top off below-level liquids. As a safety measure, the perceptive mechanics test wipers, flicker the lights, and pound out a quick Chopin movement on the horn before ducking down to check and adjust tire pressure. An inspection of the brakes confirms safe and capable stopping power when encountering ice or slippery roads, and if needed, the mechanics reposition tires for a more democratic tread distribution.