Brake cleaner is effective....but if you have a lot of residue I find it ends up smearing it.
I tried WD40 - worked very well on the wheel arches, but less well on the ali.
I tried Halfords thinner, and it had an immediate effect of melting the glue on the ali, but since there was quite a lot of it, it took a couple of hours of elbow grease to get through it all (there were quite a lot of decals as this was an old Academy car). It all came off in the end, but I spent quite a lot of time spreading it around before it came off, got through quite a lot of cloths too.
I also tried Auto Glym tar remover since it advertised it could remove glue - it did work, and was less pungent, but had the same effect as the thinner but was 3x more expensive.
I did not try brake cleaner - maybe next time.
Thanks for the update.
What sort of Halfords thinner, please?
For future reference for anyone looking at this thread, when warming the stickers before removal it's important to only apply a little heat. If you apply enough heat to melt the glue, most will stay on the car. If you just warm them gently there's a good chance most will come off with the stickers.
Applying a thin smear of Vaseline to the paint work before sticking on the decals can make them a lot easier to remove. I always try to remember this when sticking competition numbers to my painted car. I'm not sure why the adhesive works through the Vaseline, but it does.
Judicious heat and gently pulling the decal along the line of the body, rather than perpendicular to it, reduces the pull on the paint too, reducing the risk of pulling off the paint.
I'm not sure why the adhesive works through the Vaseline, but it does.
Vaseline is petroleum jelly (remember the solvent tins with black writing?) so from the composition of the adhesive it's not surprising that they dissolve in each other.
Failure by shear within adhesives (rather than at the surface) generally occurs at lower loads with thicker layers, but I don't know the explanation. Nice to see it put to advantage. Or then again the mixture might just be a *weaker adhesive.
* Jokes about windows falling out are also available.
Mr Sheen is great it dissolves the glue .
"I take her to the floor, looking for a moment when the world feels right"