Starcraft 1968 Newport V 120 Mercruiser Oil?

[MichFish]

I was givin this boat and everything seems to have been kept imaculate. But I/O are new to me and with this boat being as old as it is I was wondering if there is any certain oil I should stick with? Thanks for any info!

 

[Snowfish]

Re: Starcraft 1968 Newport V 120 Mercruiser Oil?

Welcome to the Party!

Good quality regular SAE 30 weight is just fine. SAE 40 if temps are about 90f.

API class MS or SD.

I run SAE 30 in the 69 Starcraft in my avatar.

 

[Don S]

Re: Starcraft 1968 Newport V 120 Mercruiser Oil?

Here's another post on the same subject from just a few days ago.

http://forums.iboats.com/showthread.php?t=477958&p=3238512&viewfull=1#post3238512