Okay, here's my situation. Right before the last trailride my radiator started leaking......it only leaks once under pressure and it's just a couple of pinholes (took me awhile to even find where it was leaking from). A dose of stop-leak stopped the leak. My question, how long do you think the stop-leak will last??? The dilemna is that I have another big ride coming up over Thanksgiving.....the local radiator shop can get a new radiator delivered overnight, while a connection through a friend can get me the same radiator for $100 cheaper (diesel radiator is $300+) BUT I probably would not get it in time to install before leaving on the trip.