Old Nissan 140 OB - Oil Question

[Plimbob]

I have a 2000 Nissan/Tohatsu 140 on my fishing boat. I have always used Cabela Synblend TS oil in it which has been 18 years. Cuz she is getting older
I was wondering if I should change to something higher grade oil for injection - like AMSoil Marine TS?

I run it about 50-75 hours a year.

BTW - I have not done a compression check for at least 10 years so I don't know what that is these days. I planned to do one when I get ti out of storage in a week or so.

Feedback appreciated.
Tim

 

[wpod]

It seems like you are sold on the Amsoil. Does the engine burn / use oil?

 

[PontiacHO]

At this point run what has worked for you so far. If it runs well (the same as last season) no need for a compression check. You are most likely to have a fuel related problem if there is anything at all.

 

[whosmatt]

I have a 2000 Nissan/Tohatsu 140 on my fishing boat. I have always used Cabela Synblend TS oil in it which has been 18 years. Cuz she is getting older
I was wondering if I should change to something higher grade oil for injection - like AMSoil Marine TS?

I run it about 50-75 hours a year.

BTW - I have not done a compression check for at least 10 years so I don't know what that is these days. I planned to do one when I get ti out of storage in a week or so.

Feedback appreciated.
Tim

Is it one of the carbureted 2 strokes or is it TLDI direct injection? If the former, any TC-W3. If the latter, DFI oil only. I use either Tohatsu complete advantage or BRP XD-100 in my TLDI. I'm pretty sure they are the same oil. The amsoil injector oil is supposed to be a direct replacement for XD-100 so should be good too.

I looked at Cabela's / BassPro and they have this stuff: "
Formulated and safe for use in direct Injection outboard motors – NMMA Certified

There's marine motor oil, and then there's Bass Pro Shops® 2-Stroke Marine Engine Oil Semi-Synthetic Blend"

That's fine for your motor either way and is crazy cheap... The full synthetics run $50/gallon or so.

 

[Plimbob]

Thanks guys for all your feedback - much appreciated.

Not stuck on Amszoil, a friend uses it in his older 150 Merc 2-Stroke and says it feels like it runs smoother with it?

I guess, I was wondering if there is any advantage in using full syn oil considering its age.

 

[whosmatt]

Thanks guys for all your feedback - much appreciated.

Not stuck on Amszoil, a friend uses it in his older 150 Merc 2-Stroke and says it feels like it runs smoother with it?

I guess, I was wondering if there is any advantage in using full syn oil considering its age.

I'd say if it's a TLDI motor, yeah. The synthetics are good enough that Evinrude had a programmable setting to use less oil on XD100. If you plan to keep it and the price doesn't put you off....

If it's not a TLDI I'd stick with TC-W3. Not sure about the Amsoil but I just looked at a jug of XD100 and one of Tohatsu Complete Advantage and neither of those are certified. Probably ok but not intended for that use.

 

[F150]

Stick with what you are using, worked well for all these years and is good oil. Made by Amalie I think.

 

[alarmguy]

I would stick to what you doing which seems pretty darn good considering the age of the engine.
I see no benefit in switching.

 

[RTexasF]

I would stick to what you doing which seems pretty darn good considering the age of the engine.
I see no benefit in switching.

I agree. It's still running properly so why change after 22 years?

 

[Plimbob]

Thanks to all for your input. I'll stick with the Cabela/Bass Pro blend. Like Alarmguy & RTexasF stated it's worked to this point so I won't mess with it.
I figured I post the question to get folks thoughts, people here know a hell of a lot more about oil than I.