I am having the trans cooler replaced in my 2003 PT Cruiser. There's been a slow but steady leak for awhile (nasty stains in the driveway) and I thought it was a line leak. Turns out the cooling line fitting to the trans cooler is shot and no way to fix it. The shop is replacing the trans cooler and I want to bring fluid to top it off after the replacement. I had the trans flushed (and dropped the pan and replaced the filter) about 5,000 miles ago...used Redline C+ for the flush. I was a little short on the Redline at the time so I added about 1/2 quart of ATF+4 and 1/2 quart of Amsoil fluid that I had in the garage. As the trans already lost some fluid (about 1/2 quart or so I estimate) from the leak and a little more will be lost when the cooler is replaced should it matter if I use Amsoil or ATF+4 to bring it back up to full (will have to purchase either one)? I can't get the Redline ATF locally and won't have time to order...Thanks