I discovered CA-2 North, a fantastic mountain road that winds up the San Gabriel Mountains today. I didn't take it long, but on the way up, I noticed that the transmission felt sluggish and monotonous (it felt like a strain but the RPMs were fine). The entire road is 55 miles, would I be hurting my car doing that? Do transmissions get hot or damaged on long inclines? (I was going 45-50 MPH)<p>The fluids are all clean and topped up and my tires are properly inflated. Perhaps it felt strange as I'm used to crusing down the flat freeways. Has anyone else taken their S70 or simmilar on an upwards drive for 55 miles?