Synthetic VS. Regular oil reliability

[Yaris Hilton]

Originally Posted by severous01

it's still a dark amber color, not anywhere near black or dark brown like i see most of the time working at a dealership.

That's the way the original dino stuff looked coming out of mine at 5K, and the Castrol GTX in it now is pale yellow on the dipstick at about 3K. Color doesn't tell you much, but the 1NZ-FE doesn't soot up its oil badly.