I know the general answer to this is somewhere on the Forum, but I'd appreciate some specific help.

I am premixing as a precaution on my beloved 90 GTU. My mechanic said to add about 5 ounces of two-stroke (2-cycle? Is there a difference?) with each fill up. I like Valvoline products, and I bought Valvoline 2-stroke motorcycle oil in the black bottle. But I've noticed it doesn't say TWC3 (what does that mean?).

My question is: Is this Valvoline 2-Stroke a good premix oil for street driving with an OMP, or should I toss this stuff and look for TWC3 oil?

Thanks.

 

2-stroke = 2-cycle. You do need TC-W3 spec oil though, for these engines. I know Valvoline makes one, and so do Mobil-1, Castrol, and a host of other brands. I don't know that its necessarily "bad" to run this stuff (not an expert) but I know you *should* be running TC-W3 stuff, which is just a spec for how well it remains suspended in the gas, and how well it lubricates AFTER being injected (e.g. when you are coasting w/o injecting premix for a little while, etc...). TC-W3 provides the max (currently) protection.

 

I'm using generic TCW-3 boat motor oil. Yee haw!

 

I would use TC-W3, but if you want to stick with the one you bought, just make absolutly sure this stuff is good for fuel injected engines..... should be written somewhere on the bottle.

 

What does TC-W3 mean?
http://www.nmma.org/certification/pr...dex.asp?bhcp=1


-Ted