When you put that rope in your truck, pay close attention to its storage. Petroleum products and sunlight are just some of the agents that will degrade your rope over time. Dust,dirt, and the acids from concrete slabs are very unkind, as well. Most climbers and cavers store their ropes in a sturdy bag. Ones made specifically for that purpose are available.

It would be far better to keep the rope in a dark closet in your home and put it in your truck only when you use it, which should be reasonably often so that you will be proficient when you need it.

Rope manufacturers claim that climbing ropes stored under ideal conditions will still lose strength to an unsafe degree(obvious bias possible!). They may be right, so go ahead and use it.