This December I want to go to Guanajuato Mexico From Pasco Washington. The trip is of approximately 2500 miles one way. My car is a 1995 celica gt with a 2.2 engine. Im not sure of the miles but it has approximately 250,000 miles since the speedometer was broken by the last owner for reducing the miles to 140,000. the engine is leaking little oil but i will fix that this summer and i will also put new struts and shucks. The car is still running strong. In my trip i will be making stops to rest and to get gas. how much do i need to let my car rest before making it run again.