Royal Purple motor oil

[John Graham]

Mobil1 has never been a 100% ester base.
It's been a mix of ester and PAO synthetic

1990 CQ 20V
-- 



> From: Taka Mizutani <t44tqtro at gmail.com>
> Date: Mon, 17 Oct 2005 11:53:52 -0400
> To: jesper moreau <jesper5ktqm.audi at gmail.com>
> Cc: list submissions <quattro at audifans.com>
> Subject: Re: Royal Purple motor oil
> 
> Jesper-
> Ever since Mobil went to the "Tri-Synthetic" and later formulations, Mobil 1
> has not been a pure
> ester based synthetic oil. This was shortly after Castrol won their suit by
> the FTC re: what can be
> advertised as "synthetic oil."
>  I have not had any problems with any of the various formulations of Mobil
> 1, FWIW.
>  Royal Purple is definitely better from the aspect that it is a pure
> synthetic, like Redline. However, it is a case of diminishing returns-
> depending on the cost, I don't know if it is truly worthwhile to use Royal
> Purple. Also depends on what value you place on the better oil- I'd probably
> run Royal Purple if I had a '66 Ferrari 275GTB/6, but not in my current
> cars.
>  Taka
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