Need oil recommendations

[Cripes]

I'm helping a friend change the oil on his two outboards.

1) Mercury 1115F131D (115 HP, 2016), and;
2) Honda BF50A (50 HP, 2007)

These will get light use on a Lake in the northeast US. Im looking for recommendations on oil specs/ weights, and type (dyno, FS or blend). Also, filter recommendations.

Thanks in advance!

EDIT: Manual for the Merc says 10w-30 thru 25w-40 is OK, and does not specify dyno, blend or FS. Honda says 5w-30, with no further info

 

[JavierH19]

Tons of people use whatever off the shelf 15w-40 or 15/20w-50 on old or hard ran outboard engines. Can't go wrong with a wire backed metal capped fram endurance they cross reference to. For the mercury it says it crosses to the fe2. For the honda it crosses to the fram 6607 or 7317 but they're the same in everything but length as the 7317 is a bit longer and would be the one I'd use if there's space.

 

[Black Thunder]

I second the 15w40 option.

Its what I've been using in my dad's boat with a Mercury 40-stroke.

also been using a 7317 oil filter either in a fram or supertech variant

 

[dwendt44]

Most all outboards have a low temp. thermostat. ~140° so
thick oil isn't needed in most cases. Rotella 5W-40 would be a choice or 5W-30 as well. My 2¢.

 

[PontiacHO]

Quicksilver 10w30 in both.