That's what I understand to be the truth about Castrol.

Mike

On 11/11/08 8:15 PM, "Mike S" <mikes@FLATSURFACE.COM> wrote:

> At 12:31 PM 11/11/2008, Ken Wilford wrote...
>> There are so many other full synthetic alternatives at this point.
>
> Principally because Castrol won a case in front of an oil industry
> marketing board which let them call a petroleum based Group III oil,
> "synthetic."
>
> Don't assume that a "synthetic" oil is what most people consider
> synthetic (PAO/ester basestock, which start from hydrocarbons other
> than crude oil). Castrol Syntec, for example, is made from petroleum.
> It was once PAO based, but they changed in the late 90's to a much
> cheaper basestock without lowering the price. Ripoff. Marketing allows
> them to do so.
>
> Group III oil is good, but not worth the premium many manufacturers
> charge.