Sythetic or normal oil

[voodoos_rock]

Hey i bought a new boat and the owner was using amzoil sythetic. In all of my boats i just run normal castol, would the castol work fine or should i use the amzoil sythetic? The motor was rebuild and the motor is a 1985 johnso GT 185 with boysen reeds, blueprinted reed cage, drilled exaust, nose cone, low water pick ups, a few goodies. (ps i dont really run the motor that hard)

[The Big Al]

I don't understand?

Normal Castrol??

[1BadAction]

congrats for posting the 100,000th oil thread that has been answered 200,000 times...

Search (http://en.wikipedia.org/wiki/Search)

[The Big Al]

congrats for posting the 100,000th oil thread that has been answered 200,000 times...

Search (http://en.wikipedia.org/wiki/Search)

1bad, he's new member.
Looking for help?

And we are gona help him.

He does not know how many post.

[Chummy]

I personally would keep running what the previous owner had been running...

[Ted Stryker]

Either would work... If you don't turn the engine above the factory rpm rating for extended periods, a quality name brand TC-W3 will work fine and of course synthetic will also... I'd mix whatever at 40:1 and let'er rip... Good luck..

[voodoos_rock]

Either would work... If you don't turn the engine above the factory rpm rating for extended periods, a quality name brand TC-W3 will work fine and of course synthetic will also... I'd mix whatever at 40:1 and let'er rip... Good luck..
Thanks man

[stokernick]

the mix ratio is more important than the oil type for normal running.fouled plugs vs ka-BOOM!

[terry taylor]

HI.Voodoos Rock the mix is 50 to 1 absolutely run castrol ,no problem snyntheyics leave less residue and carbon in cumbustion and ports esp. exhaust.But reg. [normal] castrol is also a good choice and in lower unit if you wish. have fun.