Black/ebony interior of C6-white powdery deposit?

[Thomas O.]

After winter storage I find a white film almost powder like deposit on upholstery. The black interior is uguly but the white powder like deosit is disgusting. Others with Ebony interior have had the same situation. Should a leather cleaner be used. Any sugestions for a leather treatment and the vinyl as well?
It is disapointing that Vettes don't have a better quality standard interior.

[Terry M.]

Re: Black/ebony interior of C6-white powdery deposit?

After winter storage I find a white film almost powder like deposit on upholstery. The black interior is uguly but the white powder like deosit is disgusting. Others with Ebony interior have had the same situation. Should a leather cleaner be used. Any sugestions for a leather treatment and the vinyl as well?
It is disapointing that Vettes don't have a better quality standard interior.

I use Aerospace 303 on the non-leather parts, and a damp cloth on the leather. The white powder will come back, but the 303 keeps it t bay for a while.

"It is disapointing that Vettes don't have a better quality standard interior."
I agree.

[Patrick H.]

Re: Black/ebony interior of C6-white powdery deposit?

I use Lexol on my leather and have never seen the white powdery deposit.

[William L.]

Re: Black/ebony interior of C6-white powdery deposit?

We here in South Florida see a lot of white powder in Corvettes, breath deeply through the nose as you sweep it up and perhaps you won't find it as disgusting!!

[Tom H.]

Re: Black/ebony interior of C6-white powdery deposit?

I have seen this residue pop up on the C6's quite often. Not usually on the leather but more on the door panels. Usually wipes clean.

[John D.]

Re: Black/ebony interior of C6-white powdery deposit?

Here's what the service bulletin has to say about this topic...




#PIC5072: White Chalky Residue On Interior Trim Panels Or IP Dash Pad - keywords appearance chalk color dark dash dust film instrument leather left pad panel right spot spots stain substance vinyl white - (Jan 20, 2009)

Subject:White Chalky Residue on Interior Trim Panels or IP Dash Pad

Models:2004-2009 Cadillac XLR models

2005-2009 Chevrolet Corvette models

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Some customers may comment of a chalky substance that is present on the interior trim panels. This is more commonly noticed on dark colored trim versus lighter colored trim. The release of this chalky substance is referred to as "Out Gassing" and can occur with plastic and vinyl materials.
Recommendation/Instructions:

DO NOT replace the trim panels to correct this concern. Clean the interior trim panels using Murphy's Oil Soap or an equivalent, non-acidic, cleaner. Replacing the trim panels does not guarantee this will not happen again.
Note: Murphy's Oil Soap can be purchased at most grocery stores. Follow the directions on the bottle for use.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

[Terry M.]

Re: Black/ebony interior of C6-white powdery deposit?

What I get on my C6 is the most peculiar gas I have ever encountered. The guy who wrote that TSB may be an engineer, but he is not a chemist. He needs to learn about the states of matter.

[Patrick H.]

Re: Black/ebony interior of C6-white powdery deposit?

What I get on my C6 is the most peculiar gas I have ever encountered.

Stop eating Mexican, dude.

[Terry M.]

Re: Black/ebony interior of C6-white powdery deposit?

Stop eating Mexican, dude.

That's it. All those plastic parts are Hencho en Mexico -- that is why the "out gas" Maybe too that is why they out gas a white powder. And that is why a gas is a solid in GM speak.

I'll get even with you on Friday. You'll find out why they call us "old farts."

[Clem Z.]

Re: Black/ebony interior of C6-white powdery deposit?

i have cleaned the the panels on my 08 corvette several times with murphys oil soap and it still come back over winter. having the car stored in my garage with a car cover on it most likely adds to the problem. mine shows up even on the red panels

[Thomas O.]

Re: Black/ebony interior of C6-white powdery deposit?

Plastic and vinyl outgassing. Well how about a better grade of plastic and vinyl at least the variety that won't leave droppings on the dash.

Oh well tomorrow is going to be 80 plus degrees in the North country and the top is going down for a 350 mile run. This will take care of the outgassing. Minnesota lake country and black top roads, will put the minor problem in the back reaches of the mind.

My seventh vette and the best yet, just never had an outgassing problem previously.

[John D.]

Re: Black/ebony interior of C6-white powdery deposit?

Thomas, Google Starbrite. You will be amazed. If you go into the boat stores you will see a large variety of Starbrite products.
Story: Had my 63 coupe (LWC) for 31 years come August. First set of repro tires on it were fake Firestones. The black rubber would turn to white in short order. I had a college kid that detailed the cars. Mark used to beg me to get rid of the tires as he spent more time on the tires than the entire car. Then when we went to a local show by the time the show was over the black rubber was growing white crap again.

A neighbor was into boats. He brought me the Starbrite and it made the white growth on the tires go away. Well for a little while anyhow.
It's sad news to hear that C6 's have such a problem.
Try putting some sheets of Bounce dryer sheets in the car.

[Clem Z.]

Re: Black/ebony interior of C6-white powdery deposit?

Thomas, Google Starbrite. You will be amazed. If you go into the boat stores you will see a large variety of Starbrite products.
Story: Had my 63 coupe (LWC) for 31 years come August. First set of repro tires on it were fake Firestones. The black rubber would turn to white in short order. I had a college kid that detailed the cars. Mark used to beg me to get rid of the tires as he spent more time on the tires than the entire car. Then when we went to a local show by the time the show was over the black rubber was growing white crap again.

A neighbor was into boats. He brought me the Starbrite and it made the white growth on the tires go away. Well for a little while anyhow.
It's sad news to hear that C6 's have such a problem.
Try putting some sheets of Bounce dryer sheets in the car.

i wonder if the stuff on the corvette interior panels is a mold release because that brown stuff you see on tire after a while is the mold release.

[Brian M.]

Re: Black/ebony interior of C6-white powdery deposit?

Does this Outgassing have any effect on your lungs?

[Dennis S.]

Re: Black/ebony interior of C6-white powdery deposit?

All this gas talk is making me gaseous. I find that if I stomp on the "gas" pedal after eating an unusually large meal, I have more out gassing.

But seriously, I have not noticed this white chalky substance on my '07 Z06. I will look more closely and try some of the products recommended here if this substance is present. Thanks for the advice from several members.