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Best rust busting fluid

3386 Views 33 Replies 23 Participants Last post by  Sparky McShakerton
What is the best penitrating fluid that is out there? I've used Bust it and that works pretty good, and also wd 40, but what other ones are good too?
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Kroil works really well. I had a can but finally ran out and now cannot find it locally.

I think the aircraft oil is Kroil.

Slanted_Mind said:
1) Aircraft penetrating oil---do not recall the brand (roommate is an A&P mechanic)
2) PB Blaster
3) Liquid Wrench
All of the above make WD-40 look like water (WD-40 is not a penetrating lube BTW) Never tried Bust-it. May try it out.

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