03 GT

Sorry, did not pick up a manual for the car yet.

Has 15,000 miles. Recently changed air filter and switched to synthetic oil. Any other maintenence things I should do? How often does the rear end, transmission, power steering and radiator need to be flushed? What the plug change interval? Throttle body cleaning? etc...

Thanks for responses dudes!

The Great Cornholio

At 30,000 miles I would change the transmission fluid on a manual or flush the transmission fluid on an automatic. Rear end lubricant shouldn't need to be changed until the Traction-Lok differential is ready for new clutch paks. Radiator flush, power steering flush, spark plugs maybe at 50,000-60,000 miles.

03 GT

Thanks for response.. Does the Trans Fluid really need to be changed at 30,000? Seems a little too soon. But if thats whats necassary, I'll do it at that time.

The Great Cornholio

For an automatic I would always change the fluid for the first time at not later than 30,000 miles. After that initial change, you can spread out beyond 30,000 mile intervals for future changes.

If you have a manual, in a 2003 GT it is a Tremec 3650 and they can definately benefit from changing the factory fill (or make that overfill). I changed mine at 13,000 miles when I installed a short throw shifter.

03 GT

Sorry for confusion, the car is an Automatic.

gibb_erish

I don't have a service manual either, but I did find this site that can provide you with some maintenance scheduling. Hope this helps. https://www.fleet.ford.com/maintenan...les/Getymm.asp