I almost ran out on the water this weekend and was able to make it to local marina. (Alarm came on after a big wave hit and I dropped in power to about 2500 rpms. Took me a few mins to figure it out...lol) I paid $40 for a single gallon at marina. I can find them for about
$35 on line if you buy a 4 pack. So marina price was not too far off at all. Amazon has them for about $49
At that mentioned price i would consider it...lol
I found the longer it sits around on a shelf the more the bottle implodes on itself. My last bottle sat on my self in my garage for about a year and sucked in so much it cracked the bottle a tiny amount at one of the edge corners, but did not leak. When I took the top off it started to leak. It was in a relatively cool dark place.
Expensive stuff...but my 2004 z150 txrc runs like an ace and my oil system works flawlessly. If my boat sits for a real long time I will pull the oil tank and clean it out. When I bought the motor it had a cm of slug in the bottom of remote tank.