Penetrating Oils -- WD40, PB Blaster, Liquid Wrench.. What works

A member of our local Cars & Croissants group recently distributed the following information on penetrating oils, which I thought I'd share for those of you who are looking for an easy way to loosen the three bolts on the Spyder's exhaust manifold (commonly referred to as "The Three Amigos") when replacing the header.

In 2007, Machinist's Workshop published information on various penetrating oils, testing various penetrants for 'break-out' torque on rusted nuts. The torque load needed to loosen the 'scientifically rusted' bolts using the various penetrants were as follows:

No Oil used .................................. 516 pounds
WD-40 ................................... ...... 238 pounds
PB Blaster ................................... .. 214 pounds
Liquid Wrench ................................127 pounds
Kano Kroil ................................... .. 106 pounds
50% ATF - 50% Acetone mix............53 pounds

A recent Drexel University engineering school study (found here) further supports the use of 'homemade' acetone blends made from vegetable oil and acetone as a better and more cost-effective alternative to commercial penetrating oil WD-40.

http://www.spyderchat.com/forums/showthread.php?55163-Penetrating-Oils-WD40-PB-Blaster-Liquid-Wrench-What-works-BEST

所有跟帖： 

• 好Tip 了，一定試一試。 就是用的時候謝謝，不能噴到塑料和橡膠上 -soccer88- ♂ (0 bytes) () 11/12/2014 postreply 19:38:56

• 去看一下，去指甲油水(主要成分是丙酮)加烹飪用油混合比WD-40好得多! -徒勞- ♂ (0 bytes) () 11/13/2014 postreply 05:23:54

• 我估計動物油（飽和脂肪酸）比植物油（不飽和脂肪酸）好用。後者時間久後會發生聚合反應而不容易清洗。 -卵世佳人- ♀ (0 bytes) () 11/13/2014 postreply 06:07:59

• ATF好，因為裏麵有清洗劑 -soccer88- ♂ (0 bytes) () 11/13/2014 postreply 10:20:04

• 好，下次換下來的 ATF 要留著了。 -色大膽小- ♂ (0 bytes) () 11/13/2014 postreply 06:19:35

• 到dollar店買一桶 -soccer88- ♂ (0 bytes) () 11/13/2014 postreply 10:21:17

• Dollar 店的丙酮好像不是純的，含水。可去Home Depot 看看, 一個 pint 才 $5. -卵世佳人- ♀ (612 bytes) () 11/13/2014 postreply 11:09:06

• 啥是acetone ？ -chinomango- ♂ (0 bytes) () 11/13/2014 postreply 08:03:51

• 丙酮 -徒勞- ♂ (0 bytes) () 11/13/2014 postreply 08:44:09

• 油管視頻： Homemade Penetrating Fluid, How to Make Your Own -卵世佳人- ♀ (327 bytes) () 11/13/2014 postreply 15:52:28

• 周末一定整一桶試一試，好了回來匯報 -soccer88- ♂ (0 bytes) () 11/14/2014 postreply 08:35:57