Bought a 92 Subaru Legacy wagon that started a top-side ticking sound last night, first time. Of course didn't hear that when I test drove. Someone told me it could be valves?

i use caltex oil, magnetec or edge brand or something similar it seems a lot better than most for older subarus, it may take a few hundred miles of driving to wear in and dislodge the **** but hopefully should make a diff start with the simple solution first i use caltex oil, magnetec or edge brand or something similar it seems a lot better than most for older subarus, it may take a few hundred miles of driving to wear in and dislodge the **** but hopefully should make a diff start with the simple solution first

Thanks for your help! Thanks for your help!