"Chris" > wrote in message
...
> The technical manual for Honda Element recommends to use 5w20 oil
> engine.
> I would try to use 5w50 Castrol synthetic engine oil. Is that OK to
> substitute 5w20?
>
> Thanks,
> Chris

Do you already have the oil? If so, use it. If not, I'd stick with 5w-30
year round or 10w-30 for the warmer months and 5w-30 for the colder months.
I know the concensus is pretty good regarding the 20 weight oils but I'll
stick with the other grades if not for better availability and value, for
better long term protection.