Read these WAS OIL Re: Synthetic oil for I-5s

[luke]

i use castrol gtx 20w50 and kendall semi-synthetic 10w30
in the winter or castrol gtx 10w40.
bosch filters. sometimes lucas oil additives.

luke
90tq

> So, Luke, if you had a tight 150k-mile engine, would you tear it down and
> 'tighten it up" so that you could pour synthetic oil into a 150k-mile
> engine?  Or, would you continue pouring dino oil into your 150k-mile
engine?
>
> Hmmmmmmmmmmmmmmmm...................
>
>  ~ Doug
>
>