Originally Posted by Hydrocruiser (Post 2928617)

Sounds like you have the right filter. If I had that engine I would compare oil pressures with the WixR and Amsoil Eao....if there was not a pressure drop I would personally use the EaO. That's just me... Kendall GT-1 Racing is a great oil.

Not sure why Merc does not use synthetics as many big engine builders do.

If the concern is that there is a myth? fact? that synthetics do not protect metal after
shutdown and corrosion may occur...motorcycle oils are extremely corrosion resistant.

It may be why many like M-1 V-Twin?

Originally Posted by aTX427 (Post 2928748)

I am having a difficult time finding the EaO part number in their cross reference web page. Do you happen to know what it is?

Originally Posted by wellcrafted (Post 2928635)

I have used the wix 57003R / with Kendall GT1 20w50 on my 2009 600 sci for 75hrs and no problems , I change oil every 15 hrs for cheap insurance .

Originally Posted by irishtornado (Post 2968243)

Anyone know the filter # for Amsoil EAO for 500efi?

Originally Posted by 07DominatorSS (Post 2968487)

An EAO 25 or if you have room for longer, an EAO 24, and if you have alot of room, an EAO 76, which is a 2 quart filter.