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Date: Thu, 22 Nov 2001 03:17:53 -0500
From: "Roger Zoul" <rogerzoulnopsamail.com>
Subject: Re: Does anyone use synthetic oils?


> > You must be able to get Mobile 1 real cheap. In the South East Mobile 1 > > is only a few cents cheaper than Amsoil > > Be very careful here. The --- for % zinc on all the Amsoil lines > in the table seems innocuous, but it isn't. > > This table has been around for a long time, and we now know the > reason why Amsoil, other than their XL-7500 line of oils, is > not API certified, and it is directly related to the amount of > ZDDP (which is composed of zinc and phosphorus). Where is the proof that ZDDP is harmful to catalytic converters? I would like to see that data. > > Mobil 1 is about $3.25-3.50 per quart. Amsoil XL-7500 is $4.15-5.20 > per quart (see http://amsoilrs.hypermart.net/sections/prices.html). > Not a huge difference, but there is absolutely no scientific evidence > that the XL-7500 is any better than the Mobil 1, so why spend an extra > $8 or so at every oil change? > > Ironically, the non-API Amsoil oils probably are better for vehicles > without catalytic converters than the API certified oils from other > manufacturers. The higher level of ZDDP does provide additional > wear protection in certain instances. If only Amsoil would change > their marketing, the advantages of their products, in certain > applications, would not be overshadowed by the image caused by > MLM. > > The more times this chart comes up, the more times I'm convinced > that it was provided by a certain synthetic oil company, and the > --- is not because the data was not available, it's because it was > chosen not to disclose it. > > > > The Data: > > Listed alphabetically --- indicates the data was not available > > > > Brand VI Flash Pour %ash %zinc > > > > 20W-50 > > AMSOIL 136 482 -38 <.5 --- > > > 15W-40 > > AMSOIL 135 460 -38 <.5 --- > > > 10W-30 > > AMSOIL 142 480 -70 <.5 --- > > > > 5W-30 > > AMSOIL 168 480 -76 <.5 ---

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