ENEOS oil: power adder or snake oil?

[Kracka]

Mobil 1 has not been a true 100% synthetic in North America since they lost their court battle vs. Castrol. I do not know much about their Extended Life, High Mileage, or any other niche lines. Do not take this info the wrong way though, Mobil 1 is still a very good oil. Mobil 1 and Castrol Syntec are both among the best off the shelf synthetics available; Redline and Amsoil are among the best specialty synthetic engine oils. I currently run Mobil 1 in my Evo since its factory fill, that may or may not be changing in the near future, I am undecided about Eneos yet (but its not lookign good) and I'm also considering Syntec. Until the Evo I never ran synthetic engine oils since conventionals have come a long way recently and offer terrific protection.

Oil generally wears out due to the additive package breaking down, not the oil becoming dirty (assuming you are using a quality filter i.e. NOT Fram). An oil’s color is generally of no indication to its remaining life. I personally think a lot of Amsoil's claims are a marketing ploy and not necessarily fact-driven. Their oil filters are decent, but the OEM Mitsu or a Wix are a better choice (reputable Amsoil dealers agree to this).

Shane, Shell Rotella-T is a great conventional oil; as is Mobil's Delco line.