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Cars covered in brown marks

  bumpkin 22:32 11 Jul 2016

I like my cars to be clean but find that they are constantly covered in small brown spots. I can't get them off easily even with repeated washing. Local hand car wash does a reasonable job but still some remain, they tell me it comes from trees. They come off with a fingernail easy enough but there are hundreds of them over the screen and bodywork. Recently had my conifers lopped if that is of any relevance.

Has anyone else experienced this or can offer advice on removal.

  bumpkin 21:03 24 Jul 2016

After polishing it the stuff comes off OK in the car wash but after a few days it is covered again. I hope this is a seasonal or temporary thing due to the recent lopping of the trees. I not I will have to clear out the garage which if like most peoples is full of junk:-)

  bumpkin 21:22 24 Jul 2016

edit I means If

  Bald Eagle 22:28 24 Jul 2016

Where I live in rural Brittany my car is continually covered in this stuff plus fly crap of which the latter is hardest to remove. However, my son gave me some Meguiars polish and this stops anything sticking to the paint! Not the cheapest but, to me, definitely the best. click here

  bumpkin 23:08 24 Jul 2016

There seems to be many similar products as one would expect. I chose "Boora" having read reviews. Only time will tell if that was the right decision.

  bumpkin 17:56 19 Aug 2016

Do your car stand in garage usually?

No, not until I clear it out which I will before winter. Problem solved for now anyway with a decent coat of expensive polish and also did the windows with another good product. I spoke to the local hand car wash owner and he now uses a different detergent, comes up immaculate for £6.

  Forum Editor 23:26 19 Aug 2016

"...a decent coat of expensive polish"

Do modern cars need polish - surely it's a waste of time and money? Cars are protected with factory applied clear-coat.

I have never applied any polish to my car, and after a good wash with water and car shampoo it looks as good as new.

  Belatucadrus 23:40 19 Aug 2016

Do modern cars need polish

Try it, the gloss level of a good polish and clean paint is chalk and cheese, if you're car proud and want to show off a bit it's worth the effort.

It's also worth remembering that the clear-coat on modern paints is necessary because modern eco friendly car paint isn't anywhere near as tough as the old solvent based stuff. Some colours also benefit from additional protection from infra red, it's not unusual to see what in their prime were gloss red cars reduced to a milky looking pink.

  Fruit Bat /\0/\ 14:43 20 Aug 2016

red cars reduced to a milky looking pink

I was always advised never buy a black white or red car (unless its a Ferrari).

  OTT_B 14:55 20 Aug 2016

Do modern cars need polish

Polish is an abrasive, which is designed to cut into the factory applied clear coat to remove very light scratching, i.e. scratches that haven't gone through the clear coat. If the scratch is deeper than the clear coat then it requires more specialist repair. Light scratching is typically a result of poor cleaning, where small bits of grit are in the cleaning sponge and mark the clear coat as the sponge is being used. Other common causes are finger nails, particularly round the door handle areas, and small stones grazing over the paint while driving. The factory clear coats are often not perfectly smooth either - in this case, a one off, very carefully controlled polish can make a significant difference to the look of the car. Certain cars are better than others out of factory - as a rule of thumb, the more expensive the car, the better the paint will look and the harder the clear coat will be. BMW and Mercedes are well known for this.

Wax, by contrast, if applied properly, can also add a shine to any car though a coating which lasts longer than 3 months is rare.

Belatucadrus: protection from infra red

It tends to be UV and to a lesser degree ozone that cause the damage, rather than infrared.

  Belatucadrus 15:03 20 Aug 2016

I suspect in this case the term polish refers to car wax rather than an abrasive paint polish like T cut, just general verbal usage rather than technical accuracy.

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