Synthetic. oil.... how many hr's ?

[Dave Q]

2003 yam. f50 (4stk) how many hrs befor I change over to synthetic oil. What's your pick for best oil. Thanks :)

[seahorse]

Get a copy of the March issue of Bass and Walleye Boats magazine and read what Yamaha says about synthetic oil. The magazine tested a bunch of oils and the results are surprising.

[Dave Q]

ttt

[PJM]

seahorse


I value you opinion a lot. So here is my question, is a Suzuki and a Johnson the same motor including the wiring harness on a 115hp tiller?

[Suzuki]

Seashorse-do work for that magazine or something?? Give up the info.