2004 Ford Mustang Got some questions for you!

Dear Bob and Ken,

I got a couple questions for you. I bought a 2004 Ford Mustang Convertible with only 5,085 miles on it. I have had it for almost 8 months now. I have been running Pennzoil platinum 5W-20 in it and was thinking of going to Amsoil because I heard that it is the best oil out there. Even better than Mobil 1 and all the other full synthetic oils in motor tests. Is it better than all the other motor oils and what kind of filter can I use. I heard the best filter out there is a K and N filter from Autozone. Also, if I use Amsoil, HOW MANY MILES SHOULD CAN I GO TO CHANGE THE OIL. I heard 7,500 is when you should change the oil and filter using Amsoil motor oil. My car calls for 5W-20, but I put 5W-10 in it. Is that ok or no? I heard using 5W-10 will get you better gas mileage, but not as much power because it is not as thick. I don't like to hear whatever the manufacturer manual says. It says 7,500 on the back of Amsoil motor oil. Can and should I go 7,500 before I change it? If I am using full synthetic I should be able to longer than 3 thousand. Then how long should I go before changing it? 7,500 miles like the back of the Amsoil bottle says.

Sincerely,

Nick


My e-mail: hellshotflowers@yahoo. Com