Im gonna change my oil for the year in my Baja 30OL with twin 496HO's. What is the best oil to run through these engines? ive been told Synth blend merc 25/40, but im wondering if there is anything better, or less expensive for same quality. Also whats the best filters to use?

Thanks!

I used synthetic last year in my 496, I did allot of reading on this myself, I switched to Valvoline 20w50 conventional racing oil, might have to change the oil half way through the year but if your motors have the drain hose its not a big deal to do. If I remember correctly there is more zinc in this oil.

Now after more reading Im wondering if I went in the right direction, Now im hoping that someone else chimes in here, I am also running a stock mercury oil filter, after some reading Im hearing Wix but do we run a racing filter on ours or a regular Wix filter one of them does not back flow so you have pressure right away when you turn it over.....Im going to have to come back to this one, maybe I spoke up to soon now I am second guessing myself.

now i have bigger motors but i am trying royal purple. i have be told its up there with being the best thing to run. now for the filter not shire on the best one to use.

Ive been reading that Mobile one 10w-30, or Mobile 15w-50 is great to use too.

What viscosity?

This is a nice deal
http://www.asaperformance.net/servle...-Engine/Detail

If You have some time,this is a good read. Click the Chaparral link in the first post.
http://www.google.com/url?sa=t&rct=j...43287494,d.dmg

straight 50

that or amsoil was what i was going to go with and went with royal purple

How many hours to you put on the boat a season?