Reloadit Posted October 26, 2019 Share Posted October 26, 2019 My 1999 Outback makes a tick tick tick sound, not so much a knock on cold starts now that it is getting cold here. It goes away after driving a few miles and car reaches operating temperatures. I can't tell if it is exhaust leaks that close when warm or if it is piston slap until oil reaches everything. My question is, what oil would be the right oil for a 1999 with 105,000 miles and would I change in the winter months? Link to comment Share on other sites More sharing options...
RumbleRumble Posted October 30, 2019 Share Posted October 30, 2019 It's piston slap. It's normal for older subarus. Just let it warm up a tad bit before you drive. Link to comment Share on other sites More sharing options...
Reloadit Posted October 30, 2019 Author Share Posted October 30, 2019 Thanks Rumble. Link to comment Share on other sites More sharing options...
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