[Mgs] ZDDP in oil

[Rick Lindsay]

I've heard that too Stephen.  The advice used to be to never use synthetic in a newly rebuilt engine.  The again, the first synthetic oils leaked pretty badly in old cars.  Since then, the makers have reformulated synthetics so that they seal better.  Rememberm paper gasket seals seal when swolen with fluids.  The first synthetics didn't adequately wet the gaskets (or swell seals).

Modern oils don't break down like ancient oils did.  Still, its still MHO that the best solution is to use the oil originally intended and change it often to throw away the debris that it collects.  I use 20W50 Castrol GTX and change the filter with every change.  Something like 5000 mile intervals.

rick


--- On Wed, 9/10/08, Stephen West-fisher <steve at coastaldatasystems.com> wrote:

> From: Stephen West-fisher <steve at coastaldatasystems.com>
> Subject: Re: [Mgs] ZDDP in oil
> To: mgs at autox.team.net
> Date: Wednesday, September 10, 2008, 4:41 PM
> There have been issues in aircraft engines where the
> synthetic oil is so
> "slippery" that the rings never seat in the
> cylinders, causing very high oil
> consumption. Most manufactures/rebuilders specify a
> specific oil for the
> first hours of operation plus specific operating procedures
> for the same
> reason.
> 
> --
> Stephen West-Fisher
> Coastal Data Systems
> 727.599.4271
> http://www.coastaldatasystems.com/
> 
> -----Original Message-----
> From:
> mgs-bounces+steve=coastaldatasystems.com at autox.team.net
> [mailto:mgs-bounces+steve=coastaldatasystems.com at autox.team.net]
> On Behalf
> Of Charles & Peggy Robinson
> Sent: Wednesday, September 10, 2008 11:21 AM
> To: Mike Duvall
> Cc: mgs at autox.team.net
> Subject: Re: [Mgs] ZDDP in oil
> 
>    This whole issue torques my jaws!  I've been
> building engines for 
> more years than I care to remember and never used
> "break-in oil."  
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