2cycle oil recomedation??

[mecatchum]

I just purchased a 1999 40 Johnson with oil injection. I wondering what is the best oil to use on this outboard. I will be using this boat for fall / winter steelhead fishing and was wondering how the cold temps may effect the flow of oil to the motor.

Thank for the help

[Sixgun]

I use Amsoil Interceptor 2 stroke oil. It was recommended by the owner of the marine store / repair place I frequent. He likes the detergent additives it has. He says it keeps the motors from carboning up.

I've used it for 2 years now. My Yamaha 90hp seems to like it.

Ray

[Rupestris]

I had too much time on my hands so I did a little digging for ya.

I checked Mercury Quick Silver, BP, and Valvoline 2-Cycle oils.

One, make sure any oil you use is NMMA Certified TC-W3.

Two, whatever oil you decide to go with, contact them or check their website for an MSDS. This will tell you the "melting point" or the temp that you need to reach before it begins to solidify.

Mercury's MSDS does not list a melting point but Valvoline/BP (Ashland chemical) does. Its listed at -38°F. So, if your oil reservoir stays above -38°F, it will stay liquid.

Because it is an oil, its viscosity will change based on the temprature. Colder = thicker. Hotter = thinner. You'll need to consider this in cold weather.

I think you'll be OK with any NMMA Certified TC-W3 oil since you won't be out in 40 below conditions. If you can, you might want to run an external tank if possible with a gas/oil misture to avoid any viscosity issues.

People in Alaska and northern Canada still run snow mobiles/machines in sub zero temps with everyday, off-the-shelf 2 Cycle oils. Odds are, the water will freeze before you see any ill affects.

Hope that helps a bit,

Chris

[Quack Wacker]

Quick Silver

[tinmarine]

Run synthetic, you won't be disappointed. I had an Evinrude FICHT that fuzzed up the plugs after about 5 hours of running. Common with those motors. I started to run Pennzoil full synthetic and the motor never ran better. Never again did it fuzz up the plugs, so there was no oil fouling. VERY little to no smoke while running. JMO but go with the Pennzoil or the Amsoil.

[waterfoul]

I have data at work on the ash (carbon deposits) left behind by most major brand oils. Believe it or not our own West Marine branded oil tested better (independent test lab by the way) than all the major brands. Ran cleaner, less smoke, and less deposits left after combustion. Give it a try you won't be dissapointed. We sell a TON more of this oil than all the others combined and have never had a complaint.

[FYRE926]

AMSOIL....I used to run Quick Silver in my 75 hp Merc and it smoked like a banshee while I trolled & ran rougher & a cob after a few hours. I switched to AMSOIL 2 years ago. No more choking smoke/fumes & she runs as smooth as a kitten purrs now matter how many hours I run it in a stretch.

[10 ring]

I run Pensoil Marine in my 4 hp for duck hunting in cold weather and never had a problem. In fact I had it for 8 years and never had to change plugs. In my 15 hp kicker the guy ran amsoil so I'm sticking with that for that I don't want to switch back to coventional once it ran with snyethic.

[waterfoul]

There are so many good oils on the market I just can't see paying the big $ for some of the so called "premium" oils such as Amsoil, Klotz, etc... It all comes down to personal preference and experience with the various oils. Everyone has their favorites...

[STEINFISHSKI]

You can put oil on dog crap to get the TC-3 rating. I would recommend any of the premium oils, along with with a carbon fuel additive for best results.

[Hookineyezz]

Is this a VRO motor? If so I would ditch the external tank and mix my own gas/oil. Thats what I did and never looked back. Oil will get thicker in the winter and the pump struggles in cold temps to draw oil up into the mixing pump. Its nice not to get the alarm and have to pump the primer ball on the oil tank ever 5 minutes. If it has an internal tank under the cowl you should be ok since heat from the motor under the cowl will esentially warm the oil to a thinner viscosity.

I use standard johnson xd50 in mine. I get in in bulk from a local dealer here in my area. much cheaper than most off the shelf name brands.