PB Blaster penetrating lube

[SR99]

Anyone ever use PB Blaster on stuck brass fittings? I've only ever used it on iron/steel parts before. The can doesn't say anything about brass so I thought I'd ask.

[trekkeruss]

Apparently it is sometimes used in the repair of brass musical instruments.

[aim4squirrels]

What specifically are you trying to loosen?

[Mike Honcho]

PB Blaster will work. Kroil is even better, if you can find it. The absolute best is a homemade 50/50 mixture of acetone and automatic trans fluid.

[SR99]

Thanks. Turns out it's not as impressive on brass pressure fittings as on generic steel bolts/nuts. Maybe because the threads fit tighter to start with? I had to let it soak in for a couple hours and 2-3 shots of PB before I could get the fittings loose but it did eventually work on all but one.

Here's a tip: avoid using this stuff indoors if possible, since the smell "penetrates" the house just as much as the liquid penetrates the threads.

I never heard of Kroil before. Thanks for pointing it out. Kinda pricey, and like you said it's a bit hard to find. Might have to try the ATF and acetone sometime.