I've been doing some research and determined TCW-2 has become hard to find.  I'm wondering what the deal is about older two stroke motors and the newer and more easily available TCW-3 oil.  How far back in time can one go and still buy a motor that's compatible with the new oil?  Does anyone know?  I'd rather not buy something where I'm stuck with a motor I can't find oil for.

thanks,

Dave

i use to run tcw3 in a 1960 johnson, and it was fine.

As far back as they first made two strokes.  Why would you want to use the older grade oils when there is TCW-3, that's 50 times better than anything made in the past?

Way2slow,

I don't know, I'm new to boating in freshwater and to two cycles in general.  That's why I"m asking, to find out.  If it's a non issue, that's great and I'll move forward from there.  I just picked up a rig today with a 1976 Johnson 15HP Seahorse on it and I didn't want to ruin the motor before I got going good.

Dave

Run the TCW-3 at 50:1 and you will be just fine.

The newer oil is chemically enhanced to provide better lubrication, reduced ash and carbon along with lower emission.

My Dad has a 58 Year model Mark 75 Mercury, it has run super fine since he bought it new, he runs the TWC-3 oils in it at 25-1. one of the mechanics told him he could run 50-1 with the new oil, but Dad being Dad says "25-1" I have used it in a 1976 Evinrude 50HP without any problems, plus many smaller older motors of the river.

Ozarkie

Gentlemen,

Thank you for the information.  Does anyone know a good parts source for this engine?

Thanks,

Dave

There are several online sources if you do a search but I usually find the dealer to be the best source.  I buy most of my small parts from a dealer because you don't save enough when you have to pay shipping and most of the time you will find you actually have to pay more for poor quality aftermarket parts than you pay at the dealer for the real part.  If I'm completely rebuilding and engine or spending a major chunk of change, I order from my wholesaler, but if I'm spending less than $100, I just go to the dealer for parts.

http://www.tcoutboard.com/

I have heard this place to be real good.  People who have been there in person say that the mountain of outboards seen on the way in is amazing.  Worth a whole trip if you are anywhere in the northern section of the country.  I have personally emailed them a few questions and they are really nice people.