Originally Posted By: raytseng
More interesting story is the OP got a 2 year old car with 125 miles unless it's a typo.
You shouldn't need to have to do any preventative maintenance if you are using good fuel.
That being said, my personal experience and usage is redline si-1 is beneficial. It often does make engines and butt dyno feel like it runs smoother, but I attribute this to having UCL and not specifically due to the cleaning... So after the treated tank runs out, by the 2nd tanks of untreated gas, it'll lose that smoothness.
If you're really itching, you can go ahead and just try it along the lines of every oil change. There is little downside, just keep your mind open that it might not have anything to clean and it does nothing.
Given the Versa has a small tank, and redline is pretty potent; you could divide a bottle of redline into two or four doses worth of treatment (but a bit of a pain to dose unless you have another empty redline bottle that you can use to portion it out to). So this is not tooo expensive an experiment to make your gut feel better.
typo is possible, also possible that 2015's are left on the lot, i bought a pick up like that many years ago(an '89 late in '90) at a great discount and i still have that truck today.