Classic cars forum & vehicle restoration.

[baconsdozen]

A few days ago I covered my Rover P5b with a blue tarpaulin as a temporary measure while doing some work near ir.
Taking it off a few days later after it had rained acouple of times I was surprised to see some dark blue stains on the silver birch paint. They resisted all washing with shampoo,detergents,cream cleaner,petrol and everything else I could think off but have faded greatly after repeated washing with plain water. Each washing seemed to fade them just a bit more untill they are now very difficult to see.
Has anyone ever come across this ?.
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Thirty years selling imperial hand tools for old machinery(Now happily retired).

[Rick]

Some cars seem to suffer more than others, the dark blue Amazon I had 20 years ago had the same problem and I never managed to get rid of the blotches entirely.

RJ
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[baconsdozen]

I read somewhere that boiling water shifts these blotches but I don't fancy the idea of pouring it over the car.I think that damp,the dye from the tarp and the heat of the sun combine to fix these stains.
_________________
Thirty years selling imperial hand tools for old machinery(Now happily retired).

[Roger-hatchy]

Passed this on to a friend who runs a Valeting and detailing company in Romford.
They do paint correction and rectification

Trades as 'Clean and Gleam' has rectifies some so called hopeless cases before now.

I'll come back to this if and when I get an answer.

Here is his website
If this is OK with Rick, please remove it if it's out of order Rick

http://www.cleanandgleamvaleting.co.uk/

[Roger-hatchy]

Got a message back from Dave.

Said he has come across this before on a MK9 Jaguar.
He said it can be machine polished out.

[baconsdozen]

Thanks or the reply. I tried soaking a chamois leather in water and leaving it pressed flat to the roof on the biggest overnight. In the morning (it was cold and damp overnight) the stain had greatly faded. A repeat performance the following night left the stain virtually invisible.
No,I haven't the faintest idea why it works either.
_________________
Thirty years selling imperial hand tools for old machinery(Now happily retired).

[Roger-hatchy]

That's interesting, I'll pass it on to dave for a comment.

[Desert Fox]