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，一定试一试。 就是用的时候谢谢，不能喷到塑料和橡胶上 -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)加烹饪用油混合比WD-40好得多! -徒劳- ♂ (0 bytes) () 11/13/2014 postreply 05:23:54

• 我估计动物油（饱和脂肪酸）比植物油（不饱和脂肪酸）好用。后者时间久后会发生聚合反应而不容易清洗。 -卵世佳人- ♀ (0 bytes) () 11/13/2014 postreply 06:07:59

• ATF好，因为里面有清洗剂 -soccer88- ♂ (0 bytes) () 11/13/2014 postreply 10:20:04

• 好，下次换下来的 ATF 要留着了。 -色大胆小- ♂ (0 bytes) () 11/13/2014 postreply 06:19:35

• 到dollar店买一桶 -soccer88- ♂ (0 bytes) () 11/13/2014 postreply 10:21:17

• Dollar 店的丙酮好像不是纯的，含水。可去Home Depot 看看, 一个 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 -徒劳- ♂ (0 bytes) () 11/13/2014 postreply 08:44:09

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

• 周末一定整一桶试一试，好了回来汇报 -soccer88- ♂ (0 bytes) () 11/14/2014 postreply 08:35:57