I just bought a'95 impreza with a 2.2 with atomatic for wife and it has a slight ticking noise coming from passenger side top end and that is how I found this message board looking online for possible answers to what is causing it. Last Subaru I owned was a'79 BRAT that I drove for about five years in mid eighties until I met my wife and she was pregnant with our first, so we needed more than two seats! The'79 BRAT never had any engine issues so I never had to work on it and never learned much about Subaru engines. I am wondering if anyone has advice on where to start looking for what is causing this ticking noise. I just bought it yesterday 3-2-2017 and haven't even had a chance to change the oil and filter. I see that a lot of people are using/reccomending 10W-30 full synthetic and not using oil additives like Lucas. Are Subaru engines different in some way than say Japanese motorcycle engines or American made V-8's? I have used Lucas oil additives for over 20 years now in all of my Japanese crotch rockets (Honda's, Kawasaki's and Yamaha's) and in Chrysler and Chevy small and big blocks with all lasting for many years of racing abuse so I know damned well that Lucas IS NOT "terrible stuff" ! But I am not going to use it in this Subaru if people have experienced problems with it in their Subaru's! It sounds to me like people are using too high of viscosity oil with an oil additive that increased the viscosity rating of the oil they are using. I was told by a local self proclaimed Subaru expert that "somewhere around '95 the 2.2 went to solid lifters. If that is correct I'm hoping maybe it's just a rocker adjustment fix. What should I be looking for besides a shop manual to learn as much as I can about this engine before trying to self diagnose or fix whatever is causing the ticking? I am reading a lot of peoples posts here that would indicate a slight ticking noise coming from this Subaru engine is not really an issue and should be expected. Car has 202k on odometer but is in really good shape and has a notebook in glove box with a record of all oil and filter changes and regular maintenance from time it was new so I don't think regular maintenance or abuse is the issue. Any information would be greatly appreciated.