The answer to this question might depend on where you live. If you live in the South part of the US then a 10-30W would be the best. If you live in the North part of US you might want to use a 5-30W. The brand does not matter. You can buy either regular or synthetic.
5W-20 ( according to the 2001 Ford Mustang Owner Guide )
The 2001 Ford Mustang has overhead valves (OHV).
5 w 20 ( according to the owners manual )
Motorcraft High Performance DOT 3
According to the 2003 Ford Mustang Owner Guide : ( Motorcraft MERCON automatic transmission fluid is used for the convertible top )
According to the 2001 Ford Mustang Owner Guide ( 5W-20 ) With engine oil filter change : The 4.6 litre Single Over Head Cam , V8 engine , in a 2001 Ford Mustang GT takes ( 4.7 litres / 5.0 U.S. quarts of 5W-20 )
I believe that is a 4R70W
Motorcraft MERCON automatic transmission fluid is used for the power steering fluid in a 2001 Ford Mustang according to the Owner Guide
According to the 2001 Ford Mustang Owner Guide , the 5 speed manual transmission that is used with the 3.8 liter V6 engine takes ( Motorcraft MERCON automatic transmission fluid )
yamalube is the best
SAE 5W-20
a mustang. a mustang.