Shouldn't be a problem at all. I am running Syntec blend 5w-20 in my 04
Accord, although this has low miles yet. I wouldn't worry about it, Syntec
blend is a good compromise between synthetic and standard oils. I also
switched a vehicle over to full synthetic with high miles without a problem.


"Bob Palmer" <jenbobkatelyn@adelphia.net> wrote in message
news:b-qdnb8UFKku4NnenZ2dnUVZ_smdnZ2d@adelphia.com...
>I just had an oil change at 67,500 miles on my 2000 Odyssey and the
>dealership used Castrol Syntec Blend oil which claims it is part synthetic.
>Has anyone had any experience with this oil and is it ok to use after using
>regular oil for 6 years?
>