91 celebrity first splash, issues??

[voodoochikin]

I've always used mobile 1 synthetic in my higher performance cars and pretty much everything but the mower... (considering a change). but recently Ive noticed its been reaching sheer point before advertised mileage is reached.. I haven't send off for a UOA... but have read a lot of convincing research. I've since started using rotella t6 5w-40 full synthetic in my cts-v.. And considered it in the boat as well. I haven't really looked into what weight to use for this boat.. know off hand?

 

[MikDee]

I've always used mobile 1 synthetic in my higher performance cars and pretty much everything but the mower... (considering a change). but recently Ive noticed its been reaching sheer point before advertised mileage is reached.. I haven't send off for a UOA... but have read a lot of convincing research. I've since started using rotella t6 5w-40 full synthetic in my cts-v.. And considered it in the boat as well. I haven't really looked into what weight to use for this boat.. know off hand?

Shell Rotella, I heard it's a good oil,,, Whatever floats your boat Just make sure you get the right weight oil, not sure what that might be?