5w-20 Oil - Toyota Yaris Forums - Ultimate Yaris Enthusiast Site

04-23-2009, 10:54 PM

#13

PetersRedYaris

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Drives: 2005 Scion xB

Join Date: Nov 2006

Location: The Black Hills of South Dakota

Posts: 1,059

Quote:

Originally Posted by YarisSedan

i think royal purple is fully synthetic as well amsoil. Mobil one and some of the cheaper ones are just refined organic oils to the point where they can call it synthetic. But its not fully synthetic. Which is why amsoil oil is supose to be good for 25k miles garenteed.

Uhhh, ALL oils are organic...

But yes, I agree AMS is far better, though maybe not for almost twice the money.

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