[Mgs] ZDDP in oil

[Paul Root]

If you read in the Castrol pages, in the Myths and Facts, they'll say  
that the need for break in oil or not using Synthetic
is a myth. Also, a myth that you can't go back.

On Sep 10, 2008, at 4:51 PM, Rick Lindsay wrote:

> 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