Join Date: Aug 2017
Location: Isle of Sheppey
Have been working on my own cars for years, mainly Rover's, Alfa Romeo's and Lancia's. There's one thing though that tends to puzzle me sometimes, and how people rave about it so much, and that's the subject of penetrating fluid. Plus Gas, WD40, Triflow, P Blaster - there's loads of them. I understand the principle of how it works, but what are peoples thoughts on it?
As an example, the rear shock bolts (long) on the Alfa Romeo 156 - probably an extreme example as these are know to be problematic anyway, although my choice of penetrating fluid - P-Blaster or Plus Gas, didn't touch them. Another example from the other day, whilst changing brake hoses on the 156 - the 11mm unions became stuck on the copper brake line. Bring out the Plus Gas, soak them overnight, still completely seized in the morning. Obviously these are quite delicate, so instead of messing about trying to tighten then loosen like I normally do, applied a little heat - no problems undoing them. Trailing arm bolt, no luck with the Plus Gas again, a little heat and out they come.
Obviously there are many scenarios where heat cannot be used to unseize fixings, which is ideally where penetrating fluid takes over - but has anyone really had an success with it?