yamaha 115 4 stroke

[aussie]

hi could someone tell me a good engine oil other than yammy oil is synthetic oil ok

[captpete13]

Yamaha recommends using their own oil. Or a FCW rated oil. On our towboats we use Mobil 1 and have literally thousands of hours on them

[aussie]

hi pete mobil 1 is a car engine oil ?

[THEFERMANATOR]

Originally Posted by aussie

hi pete mobil 1 is a car engine oil ?

Yes, a high quality fully synthetic automotive oil is what most run as it is a better oil for about the same or less cost.

[spareparts]

the local boat taxi recently pulled their F150's off their boat at 6400 hours, it was written up in the Yamaha bulletin. I don't know what Yamaha said about which oil they were running, but I know for a fact it wasn't Yamaha oil. I think they've run Sierra 10W30 FWC in it. I called Shell oil company once about running Rotella in a four stroke outboard. With in three phone transfers, I was talking to the head of Rotella oil(their customer service is outstanding). He gave me the official spill about them not testing Rotella in any outboards and their sister company Penzoil offers a specific four stroke outboard oil, but after all the official speech, he told he'd run Rotella in it.

[captpete13]

Originally Posted by spareparts

the local boat taxi recently pulled their F150's off their boat at 6400 hours, it was written up in the Yamaha bulletin. I don't know what Yamaha said about which oil they were running, but I know for a fact it wasn't Yamaha oil. I think they've run Sierra 10W30 FWC in it.

I read that article too. Very impressive. even though they said the motors were always run at something like 1500 rpms. At that speed my 225 would probably last that long. Now the motors are on a Grady out in the Gulf somewhere. Like the Energizer bunny...Still going.