I still have a 6 yr old bottle...

I never liked using these drops as you should really rinse the motor after each run - they attract a lot of dirt. The only time I used them is if I didn't have time to rebuild a motor on race day and I needed one last run out of it - they're good for reducing arcing on badly maintained motors. I've never seen the magic 'extra' rpms they claim to produce.

I see from another forum that someone is recommending them as a speed secret for titan 550 motors so there will probably be a renewed interest. I can see where they'd help get a couple more runs out of a half-dead non-rebuildable.

Google turned up this link where they're still available:
http://www.axiommotors.com/Racing-Ac...ops-p-107.html