mdcobra98

Hey guys I have a blue98 cobra with 16000 miles on it. I just bought it a month ago and I have and axle seal leak which I will fix this weekend. But I need some advice on which gear oil to use. Redline or conventional. I was told by a service manager at ford to get redline synthetic with friction modifier. What do you guys think.

Im also replacing my tranny fluid to reduce my gear noise. My car calls for atf. I was thinking about ordering some d6 atf? Any suggestions would be great!

Thanx