Hi all, I just purchased a 97 outback with 151000 mi. and I was thinking of switching to synthetic oil or possibly a synthetic blend? Anything you recommend for an older engine? I do have some of the dreaded piston slap that I have heard others talk about on here. I am also going to get the tranny oil changed right away. Any good suggestions on types of fluid to use for that? I also have the AT oil light coming on at startup. I just ran it thru the carwash and thats when the light came on! I read about one other member here who that happened to also. I know the previous owner used Penzoil non synthetic oil in all his oil changes. I am not expecting this car to be perfect with all the miles on it, but just hope I can keep up with the repairs without going broke. Thanks for any help.