On Mar 17, 11:13*pm, "SteveB" wrote:
Yesterday, a poster answered my post where I bought some bottles of Johnson
outboard oil. *IIRC, he said to be sure it was TC-W3.

I looked on the bottles, and this is TC-W II.

Now, I go googling, and come up with the terms two cycle and two stroke. *To
my understanding, they are the same, using a firing system that has no
valves, and the oil/gas mixture goes on both sides of the piston, versus the
four stroke where the crankcase oil is isolated from the combustion chamber,
has a valve train, and it is called a four stroke. *Never heard one referred
to as a four cycle motor.

Can someone give me the short answer on if this TC-WII Johnson oil is good
to use in my '89 Merc 4 cyl TWO STROKE motor?

Is there a discernable difference between TC-WII and TC-W3 oil?

I've run a lot of oil and a lot of gas in a lot of engines. *Only burned up
one chain saw, and that was when I had too much beer and used straight gas
in it. *OOps. *Other than that, I have never had a problem, and have to say
I probably ran stuff a lot oilier than I should have, but that's better than
the chain saw episode.

Does this difference in oils really make a difference other than to anal
personalities? *What is the difference between type 2 and type 3 oil?

Steve

In fact the 3 spec was published in 94 so your 89 engine could not
have required it. Will it be the end of the world if you run that
type 2 oil through your outboard? No. You could save it for the home
tools if you are still concerned. As to using too much, that's not a
good thing either. Excessive oil will increase deposits on the
pistons. You should mix the oil to the recomendations if the engine
uses premix.