weider1717
Petty Officer 1st Class
- Joined
- Sep 2, 2008
- Messages
- 315
I did a search but never found what I was looking for. I have a 84 boat with a mercruiser m260..350 chevy with 260hp.
If I remember correctly the manual says to use straight 30 weight oil. I have never changed the oil in it I think my uncle said he THINKS he used 10w40 castrol in it.
why are they agaisnt a mutli viscosity oil in this engine? Should I actually stick with their recommendation or is it BS....
with that said what viscosity would you guys recommend? and should I or should I not stay with straight 30 weight oil.
as far as brands I use I run mobil 1 synthetic in my truck and castrol gtx in my wifes car. I guess I'll stay with those brands or maybe should I try mercruiser 25w40? I find it funny they push their 25w40 but my manual says use straight 30 weight lol.
If I remember correctly the manual says to use straight 30 weight oil. I have never changed the oil in it I think my uncle said he THINKS he used 10w40 castrol in it.
why are they agaisnt a mutli viscosity oil in this engine? Should I actually stick with their recommendation or is it BS....
with that said what viscosity would you guys recommend? and should I or should I not stay with straight 30 weight oil.
as far as brands I use I run mobil 1 synthetic in my truck and castrol gtx in my wifes car. I guess I'll stay with those brands or maybe should I try mercruiser 25w40? I find it funny they push their 25w40 but my manual says use straight 30 weight lol.