170 mercrusier 1985

[myotherbiscuit]

Changing the oil on my 170 i.o. should I use 30,40,or 50 weighht and should I use a detergent oil?????????

 

[cr2k]

Re: 170 mercrusier 1985

Use a good grade auto oil unless you boat is cold water 10-40 oil viscosity is good.

 

[Don S]

Re: 170 mercrusier 1985

Here is Mercruisers recommendations directly from Mercruiser
http://www.mercurymarine.com/servic...ntenance/faqs/mercruiser/?category=fuel#MCOil

If you don't want to use their recommendations, Here are a few previous threads on what type of oil to use.

http://forums.iboats.com/showthread.php?t=423766

http://forums.iboats.com/showthread.php?t=451752

http://forums.iboats.com/showthread.php?t=445976

http://forums.iboats.com/showthread.php?t=436377

http://forums.iboats.com/showthread.php?t=300620

http://forums.iboats.com/showthread.php?t=426361

http://forums.iboats.com/showthread.php?t=357663