I was at the Nashville Super Speedway Saturday driving my car while noticing fluid blowing up on my windshield. Took the car in the garage and it was power steering fluid. I figured out what the problem was. I have a New Shelby Polished Billet Aluminum Power Steering Cap like some of you, and it does not fit as tight as the stock cap so that allowed air to get in which let the fluid to boil and put air in the system. I ended up draining and flushing the system then refilling it and then I wrapped teflon tape around the rubber seal to create a tighter fit. The tape is just a temporary fix but it worked. So if anyone has this cap it would be a good idea to check your fluid. Compare the stock cap against the New Shelby Polished Billet Aluminum Power Steering Cap. Hope this is helpful for anyone. I am going to find a bigger rubber seal and see if this will fix the problem.