FWIW
Mobil oil manufactures its own base stocks from hyd. oil to the most
sophisticated jet oils. Mobil 1's base stock is a PAO ( polyalfaolifin). Some
name brand synthetics are POE (polyol ester ) . POE's do have a wider heat range
than do the PAO but Esters do have a tendency to swell seals which isn't good.
On the other hand PAO's tend to dry out the seals. Mobil 1 also has about 10%
ester to get the right amount of balance.
Colin H.
Rader wrote:
> [An Amsoil dealer speaks...]
>
> > Amsoil is not an oil, 100% synthetic, even the base stock.
>
> I assume this is either a typo, or the guy is just parroting the dealer
> info he got from his Amsoil upline.
>
> Last scuttlebutt I heard from a dealer, Amsoil base stock was corn oil,
> but I'd guess they have multiple base stock vendors.
>
> > Synthetic and
> > petrolum oils are compared in tests that show the real difference.
>
> Hype alert!
>
> > All of Amsoil's
> > lubricnats meet and exceed OEM requirements whether they display the API
> > symbol or not.
>
> Sorry, but if Amsoil isn't willing to pay API to certify a lubricant
> and get the right to display the sunburst symbol, the OEMs have a legitimate
> reason to not recommend using that lubricant if/when they recommend the
> certification. Their call, not the Amsoil salesman's.
>
> The dealer network is one reason I favor Mobil 1 synthetics over Amsoil.
>
> Ron
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:09:20 EDT