I have been using synthetic oil since 1993 on all my vehicles including a
honda accord and honda civic. My manual calls for 5w30. As far as using
Castrol synthectic, that is just fine. I used to use that but switched to
Mobil one synthetic. (personal choice). Both are very good!! My 93 civic
has 280000miles as proof. There is no special filter that I know of for use
with synthetic oil, however some filters are better than others. They just
have better filtering characteristics. Usually the more expensive the
filter the better, but if you regularly change your oil at 3k to 5k miles it
isn't going to make much difference. Just my two cents
"Chris" <criro1961@yahoo.ca> wrote in message
news:f68m81tlpfmg7840ujh1r1bvremuk4nl06@4ax.com...
>I did change yesterday, at the Honda dealer, the oil on my Honda
> Element 2004.
> I asked for Synthetic oil. They did change the oil.
> Later I did noticed the oil they put was Castrol, Synthetic, 10W30.
> In the Honda Element owner's manual is mentioned to use 5W20
> Someone told me later for Synthetic oil I should use special filter
> for synthetic oil.
>
> My question is if Honda dealer did OK when they put Castrol oil
> instead of genuine Honda oil and filter.
>
> Any comments would be appreciated