Stuart MacMillan wrote:
>
> Dominic,
>
> The key difference with synthetic oil is the "base stock" from which it
> is made.  Synthetic  base stocks are made in the lab and have a much
> more uniform chemical composition, which really means more of the long
> chain molecules that provide lubrication.  As temperature and
> particularly pressure in a transmission break down these long chains the
> better an oil with a high concentration of them will perform over a
> longer period.
>
> Mineral oil base stocks are a distillation of crude oil and a mixture of
> many different molecular lengths. As these break down the concentration
> of the long chains drops off more rapidly.
>
> So, find a pure synthetic locally if you can, or mail order the Red Line
> MTL.  You only have to change it every 50,000 to 60,000 miles.  If you
> don't use synthetic change your mineral based oil every 20,000 miles.
> --
> Stuart MacMillan
> Manager, Case Program
> 800-909-8244 ext 208
>
> Getting your share of the Net yet?
> http://www.cobaltgroup.com
> http://www.casedealer.com/demo
> http://www.caseihdealer.com/demo

Stuart,

Is there ever a problem due to the gearbox having been run with mineral
based oil for years and then switched to synthetic or radial seal
compatibility ?

    JP