Conventional or Synthetic

[fnkngrv]

Originally Posted by RedRide

Exactly.

One issue that is hardly discussed is no matter what kind of synthetic oil you use, the filter still should be changed as often as with dyno oils and all the contaminants from blow by, etc still build up.

Synthetics may be a bit better for a high performance engines but are a waste of money for an econo engine like in the Yaris....IMO.

So getting 15k miles out of a single filter and round of AMSOIL synth is waste of money? On the contrary it will take some smokin good deals to get a better bang for the buck, but I digress seeing as how there are too many oil threads on this forum and others.