Does it expire ?

[Byram]

I found a quart of Yamalube ring free plus fuel additive on my boat shelf in the basement. Gotta be at least a year old. Does it lose any of its magical properties over time ??

 

[DennisG01]

If you want, I'll take that expired stuff off your hands at no charge so you don't have to pay a recycling fee....

No, it'll be fine. Maybe at some point - but certainly not just a year, or even a few.

 

[seasick]

I was going to say that and agree to pay postage
On the serious side, I have been using the Startron version of ring free for a bout three seasons/ My motor is 20 years old so who knows if it makes a difference. Motor still runs good.
When Ring Free increased to almost 60 bucks a quart I just decided to look at options. Now on a new motor I would probably use the real thing.

 

[wspitler]

I use Marine Techron and have found it as low as $50 /gal. Now $70 on Amazon. I personally believe it to be equivalent to Ring Free, maybe even same stuff.