Welcome to the site, George!
Here is how you post to our Forums and each Forum works exactly the same. This is the procedure to do when you have a question to ask about your car.
At the top of your screen on All Ford Mustangs website is a Blue bar displaying the following:
Home - Forums - Gallery - Classified - Events - Articles - Features - Reviews
1.Click on Forums
2. Scroll down the page
3. Click on "5.0 Mustangs'" Forums (or relevent forums)
4.Click on "5.0L Talk" or "5.0L Tech"
5.Click on "New Thread" left side of screen
6. Type your question
7. Click "Submit New Thread"
Let us know how you make out!
If you are responding to a thread - you either have a "Quick Reply" box (type your text to reply to comes thread) or there is a "Post Reply" button on the left - click that and you are on your way.
Let us know if this helps!