Rear bumper PITTING

FInal Edition #187

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I need you help in understanig a the following dilemma:

The car: 1)2002 FE with 7600mi
2)B&B exhaust (added at 700mi)
3)3" Cats (added at 700mi)


The car has never had any problems, has always ran fine, no known oil use, never tracked, driven moderately. A Cailf car, I bring this up due the the wisdom of our officals here that believe we need our own special formula for gaseoilne. No additives added to fuel.

The problem: I have noted over the last few months when washing the car that the rear bumber has some "black" sooting (light) on the rear bumper which I believe is normal.
There also are little black specs that are very hard to get off, I have used kerosene to try and remove the stubborn ones. I have noted that they appear to be burned into the bumper surface when removed they leave small divits. My first thought was the cat substraight was coming through the exhaust and burning the bumper by heat or chemical reaction. Shawn Roe indicated that he thought it may be caused by oil comsumption. If the car is using oil it is a very small amount.
Needless to say I'm concerened that by the time the car hits 15k the rear bumper may be in sad shape. Thank you in advance for your time and input.
 

HSSSTOY

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To preserve the integrity of the paint use 3M Chip Guard in the affected area.... you will never know it is there... easy to clean, scrub all you want with soap and water. Consider the same for the front of the hood, hope that helps.
 

BLUESNAKE367

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FE187, I have corsa exchaust on my GTS, and I have the same issues as you, but I also had black sooting from stock exchaust also, really ticks me off to wash it, and by the time I get home the rear bumper and upwards has black spots all over it....

I usually use a baby diaper and wd/40,(best cleaner around) and it comes right off, of course I run my duster lightly over it first to remove anything that may scratch the paint, never had pitting though...

Sean Roe knows his way around these cars, so if he says possible oil consumption, you can take that to the bank, I will watch my oil level as well.
 
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