Re: oil oil oil...
Have you ever heard of the Placebo effect? I challenge you or anyone else to provide peer reviewed, scientific data that backs up such claims. Spew from Amsoils or anyone else's website does not constititute data.<br /> I will say this. After playing around with a variety of oils, both syn, mineral, and blends I have never heard a engine sound differant, have more performance, or have better economy from a switch in oil.<br /><br /><br />Premium plus is a synthetic blend oil. It performs very well as I have tested for over 1000 hours on 14 differant motors. Ditto with Yamalube 2m.Originally posted by pecheux:<br /><br /><br />I did try that HPI in a 9.9 Johnson that ran on Castrol super outboard oil most of its life and I was astonished with so many improvements ... enough to say I ll stick with it. That motor imediatly started to behave like a 12 hp ... including smoother idling, less engine noise, and faster WOT speed.<br /><br /><br />Is that Merc premium plus a synthetic oil ?<br /><br />Cheers to Y'awl.