The manufacturer's recommended engine oil viscosity is 5W20. For a 4 cyl non-turbo, you'll need 4.5 quarts. For a turbo or a V6 engine, you'll need 6 quarts.
The 2006 Ford Mustang owners manual shows : ( 5 W - 20 ) for the 4.6 L - 3V - V8 engine
The 2006 Mazda MAZDA5 has an inline 4 engine.
The 2006 Mazda MAZDA6 has an inline 4 engine.
The 2006 Mazda MAZDA3 has an inline 4 engine.
The 2006 Mazda MAZDA3 has a 2.0 L base engine size.
The 2006 Mazda MAZDA5 has a 2.3 L base engine size.
The 2006 Mazda MAZDA6 has a 2.3 L base engine size.
The 2006 Mazda MX-5-Miata has an inline 4 engine.
is the v6 2006 mazda 6 an interference engine?
The 2006 Mazda MAZDA6's engine produces 160 hp @ 6000 rpm.
The 2006 Mazda MAZDA3's engine produces 150 hp @ 6500 rpm.
The 2006 Mazda MAZDA5's engine produces 157 hp @ 6500 rpm.