2008Yaris w/ 131000km due for oil change.Conventional or synthetic?Change filter too?

[CoryM]

Originally Posted by JDJanitor

That's about 5000 miles? Can't argue with lab testing.
Are you using synthetic or conventional? I was thinking synthetic should make 7500-10k Miles, but maybe I will re think that

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Yeah roughly 5k Miles. Conventional oil. My car gets a lot of autoX and abuse, mixed with slow, local driving. I'd bet the typical Yaris coiuld stretch the oil life to 8k Miles easily, but can't say for sure. Testing isn't expensive. $50 or so per test. If you can extend your oil life with two tests, that $100 will pay off pretty quick (especially if you're paying someone else to do your service).