Fuel Tank undercoating color

[joe_72T]

Hello All,
Car is hibernating so I have a few projects that I am working on. The bottom of the fuel tank had a lot of surface rust so I removed all the rust and the rubberized undercoating with a scraper and wire brush down to the bare metal. I did not remove the tank from the car as the top of it is in very good shape. Next I used POR15 over the bare metal and then the final coat was flat black undercoating from a rattle can (Wurth brand).

It looks great but I am now thinking that I should have used the same color as the top of the tank (grayish) and not black like the rest of the under-body. Repainting is easy as the car is on the hoist. What is correct?

Thank you all in advance.

[Stophos]

I have never quite been able to get the answer to this question. People will tell you Wurth but though nice it is not a match for the original gray. Do a search here and on the
early911sregistry.org and you may find what I have not.

Chris

[deshetlr]

Here is my thread on the topic. I used the Wurth product but due to my body guy and I being detail nuts we painted over it with a custom mixed paint. If you are not quite so crazy the Wurth product is very close. At least in the Carrera the color you see is spot on correct.
http://forums.pelicanparts.com/paint-bodywork-discussion-forum/446855-gas-tank-cleanup.html

[RWebb]

Order Surflex in a Standard Color - In the comments section, you can just say: switch order to Porsche Gas Tank Gray.

You need to clean the gas tank well, sand lightly and apply the Surflex in several light coats.