[AdamsCL]

Does the '08 Highlander come from the factory containing conventional or synthetic oil? I've been told that some of the models are shipped with synthetic, but not sure about the Highlander. Thanks!

 

[deadrx7conv]

I doubt it. Usually only if a synthetic is required, then it would be factory filled with it. (hint the 0w20 used by some newer Toyotas).

Since we need either regular 5w20 or 5w30 oils, then that is likely the factory fill.