Below are the AMSOIL oil and filter recommendations for your 1983 Ford Mustang 3.8L
1983 FORD Mustang 3.8L 6-cyl Engine Code 
Your 3.8L 6-cylinder engine cranks out 112 hp and 175 lb-ft of torque. It can also go from 0-60 in 10.03 seconds. This engine is an excellent candidate for AMSOIL synthetic motor oil and is worthy of taking excellent care of for the long term.
Here is what you need:
You need 5 quarts of AMSOIL 5W-30 Signature Series 100% Synthetic Motor Oil ASL-QT which you can learn more about here:
AMSOIL Synthetic Motor Oil 5W-30
You need the AMSOIL nano fiber long life oil filter for your car and the model is EAO15.
To learn how to get wholesale dealer pricing and the fastest and easiest location to get Amsoil for your Ford Mustang go to where can I buy amsoil oil.
Back to AMSOIL For Mustangs