3alarmer 

djb

Neil Young would tend to agree with there.

djb

I will check, but my old mtn bike that was used mostly for commuting, got somewhere between 20 and 25000km out of a good quality square taper and when I had it open, I don't recall it being overly mucky in the bb area, and don't recall a hole down there. Alu frame but ridden in all kinds of weather, but kept in a garage and cared for.
Seems to me that a hole at bottom of shell would be counter productive.

Kopsis

Frame builders like Nate Zukas disagree:

djb

that is really cool, what a neat aesthetic way to put in what they obviously think is useful.
again, very cool.

HillRider

Yeah, and IIRC, years ago Colnago had an "Ace of Spades" cutout in their bottom bracket shells.

DorkDisk

I treated my thin walled bike in 1996 with framesaver when I lived on a sailboat.

Every time I look inside the headtube into the top and bottom tubes, there is no rust. Also from BB to ST and DT

Ronsonic 

The benefit of a drain hole may depend on where you live. I became a believer years ago when a relatively new bottom bracket died on me and disassembly found a tablespoon of silt that had somehow washed in there and never left.

wvridgerider

I put boiled linseed oil in my Karate Monkey three years ago but never checked in the tubes

djb

update: not sure if I mentioned, but after asking around at various bike stores here in Montreal, and even in some car body shops, I was never able to find either Frame Saver or any Amsoil products, so in the end just ordered a small can of Frame Saver from the states and picked it up eventually when I received some other bike parts from Oregon sent to a US PO box in Vermont close to where friends live.

as many of you said, its pretty much a simple process, I did appreciate having an aerosol can and small tube to easily get it into small holes at ends of the chainstays or whatever. I pretty much used common sense in terms of moving frame all around to ensure the stuff moved around on all surfaces, and waited the suggested couple of days before putting parts back on.

I also did liberally put regular old automotive grease from an old tub I have, all over the bb shell threads and headset areas, and plastic bags over the disc calipers, as indeed the stuff did drip out all over, and I didnt want to have to deal with it in places I didnt want it and be a pain in the keester to get out.

thanks for the all the recommendations.

Was it necessary to do? Probably not, but it was worth the extra time given that I wanted to take apart the Hollowtech bb anyway to see how it works, and I did the drop bar change afterwards, so all the cables+housings were coming off.

Carbonfiberboy 

I poured a bunch of frame saver into an old steel frame of mine. Stupidly I didn't remove the BB. The stuff washed the grease out of it pronto and I had to rebuild it. Otherwise it probably worked fine, not that I'd ever had a problem with the frame.

djb

Heck, I've done all kinds of moves like that over the years, with cars, motorcycles, bikes, household stuff.
I generally classify myself as a bumbler, often I bumble way through repair things. Such is life and sometimes you just have to laugh at yourself.

Lug

Another aviation product that can be used is ACF 50. It is a purple colored liquid about as thick as water. It doesn't put on a thick protective layer like LPS 3 does, but will seep into all the cracks and crevasses that water will get into and work its magic. Over time it will attract dirt but not as fast as the heavier coatings like LPS 3.
Justin

djb

thanks for the suggestion, but I'm sure the can of Frame Saver I have will sit on a shelf for the next decade or two....