what weigth oil is best for my merc....

[mailman62]

2005 50 hp merc 4 stroke efi, im preparing to do oil change and wondered what weight oil would be best, 10w 30 , 25w 40, not sure what weight , any suggestions? thank you

 

[guyjg]

read this http://www.mercurymarine.com/parts-...rview/precision-lubricants/4-stroke-outboard/