Which of the following is NOT a benefit of properly warming up a vehicle?
- It reduces wear
- Warms the brake lines ✓
- Lubricates components and seals
- It helps prevent leaks
Answer: B. Warms the brake lines
Warming the brake lines is not a benefit of proper warm-up; warming up helps lubricate parts and seals, reduce wear and prevent leakage.
Why this is the answer
The truck handbook says a proper warm-up helps lubricate components and seals, which reduces wear and leakage. Those are the benefits it links to warming up. The handbook does not list warming the brake lines as a warm-up benefit, so that choice is the one that does not belong.
Why the other answers are wrong
- A. It reduces wear — Reducing wear is a benefit the handbook directly ties to proper warm-up, so it belongs among the benefits.
- C. Lubricates components and seals — Lubricating components and seals is named as a warm-up benefit in the handbook, so it is not the exception.
- D. It helps prevent leaks — Helping prevent leaks is linked to proper warm-up through reduced leakage, so it is a real benefit rather than the exception.
Remember it
Remember warm-up as a lubrication-and-leak protection step; brake lines are not part of that list in the handbook.
Official handbook: Official MTO Truck Handbook, Driving efficiently – Smart driving practices