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

[JDJanitor]

Originally Posted by CoryM

I agree. Nonetheless, customers killing engines because they run them out of oil is much more wasteful.

I've done oil testing on my Yaris since it has an unusual/hard life and settled on 8000km for the oil I use. I might be able to stretch it to 10,000km but it is not worth the risk to save ~$15/yr.

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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