Why is my Toyota Yaris using so much oil?

I have noticed that my 2010 Toyota Yaris 1.33 goes through oil. I have used genuine parts as per the last service with no help. There are no obvious signs of leaks. I was considering using a different oil brand and perhaps an additive. What are your suggestions to resolve this issue?

Asked on 7 May 2019 by Soori

Answered by Honest John
Oil consumption was a bit of a problem with the 1.33 engine in the Yaris, probably caused by a worn or broken piston oil ring, though could also be valve stem oil seals. Have the engine oil pressure tested.
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