WD40

[Justin Cyder]

I've just done the front pads on my Mini Cooper S. The caliper bolts were completely welded on. A breaker bar was no good - too tight under the arch, so whilst head scratching, a good douse in WD40.

Eventually, got them off with the help of a 4lb tapometer, but having left the bolts for a good half hour, when I finally got them off, they were completely dry. WD40. What's the point?

[VinceFox]

I always found plusgas infinitely better, but it seems hard to find in shops these days.

[Defcon5]

You need a proper penetrating fluid. Plusgas is meant to be very good

[GTiVR6]

Plusgas in Euro Car Parts but never tried it.

[GarryA]

http://www.tooled-up.com/Product.asp?PID=192100&am...

Expensive but very good.

[Pooky67]

WD40 is truly a de-watering spray, not a penetrating fluid. As above PlusGas FTW.

[Justin Cyder]

I'm all for win. Plusgas then when for when I get round to doing the back wheels.

I love working on (my) motors.

[voicey]

Another vote for Plusgas here!

[Justin Cyder]

I'm trying to work out how I've mucked around fixing motors for twenty years & never heard of plusgas!

[Mr2Mike]

Caliper bolts are very often thread locked, no amount of penetrating spray will fix that.

Even if you have a very corroded fastener, penetrating spray does not magically dissolve rust so whilst it can certainly make undoing the bolt easier after you have broken the initial corrosion bond, it rarely if ever makes that first step much easier.

[maniac0796]

Expensive though.

Half the problem is working on the floor. Means you can't get a proper swing or straight movement.

[944fan]

Another vote for Plus Gas. Once you've used it once you will wonder how you ever lived with out it

[Evoluzione]

http://pistonheads.com/gassing/topic.asp?h=0&f...

[wca]

Plus gas for penetration, WD40 for aftershave (just me who loves the smell then?)

[Mr2Mike]

944fan said:

Another vote for Plus Gas. Once you've used it once you will wonder how you ever lived with out it

I simply don't understand the love for PluGas, it seems like this is another Internet phenomenon like the Porter Cable DA polishers were a few years back. It works ok, but no better than numerous other penetrating oils.

[lgw]

Another vote for Wurth's Rost Off never failed yet

[DrDeAtH]

WD40 is not a penetrating oil..... PlusGas is.... thats why it works

[Mr2Mike]

DrDeAtH said:

WD40 is not a penetrating oil..... PlusGas is.... thats why it works

Is that why the WD40 can states that it penetrates stuck and rusted parts?

[Jezz172]

WD40 was never originally meant for penetrating rust, it just helps
The WD in WD40 stands for Water Displacing.
They do a new variation though seems good:-
http://www.wd40specialist.com/products/penetrating...

[mad4amanda]

Mr2Mike said:

944fan said:

Another vote for Plus Gas. Once you've used it once you will wonder how you ever lived with out it

I simply don't understand the love for PluGas, it seems like this is another Internet phenomenon like the Porter Cable DA polishers were a few years back. It works ok, but no better than numerous other penetrating oils.

Bit more than that; Plusgas IIRC won a test on penetrating oils a few years back in practical classics it works really well.