FunkyKev wrote:
> 1998 Accord V6. 190k. Always used Castrol 5-30 regular or high
> mileage. No leaks, no smoke, no nuthin'...ever. Any reason to switch
> to Full Synthetic at any point...especially now? Thanks.
>
> kevin

Only reason I can think of would be to reduce the number of oil changes
you do every year. Synthetic *may* increase your mpg by a little bit,
adding economic value.

I use Mobil 1 synthetic in all my cars because of the local temperature
range and number of cars I look after. I use 5W-30 in all of them and
can report the same results as you, no leaks, no smoke, no oil-related
issues of any kind. Usually get better than EPA mpg ratings.
Been using Mobil 1 since 1987.

YMMV