The 3.0 liter " Vulcan " V6 engine is an over head valve / PUSHROD design
( The 3.0 liter " Duratec " V6 engine is a Dual Over Head Cam design so it doesn't have pushrods )
The 2004 Ford Taurus Owner Guide shows ( 5W-20 ) for the 3.0 liter Vulcan and 3.0 liter DOHC Duratec engines
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The 2004 Ford Taurus Owner Guide shows ( 5W-20 ) engine oil for both 3.0 liter engines ( " Vulcan " and " Duratec " )
You either have the 3.0 liter " Vulcan " V6 engine , which is an over head valve / pushrod design or the 3.0 liter " Duratec " which is a DOHC ( dual over head cam ) design
On a 2004 Ford Taurus 3.0 liter V6 ( both the " Vulcan " and the " Duratec " )firewall1-----2-----34-----5-----6front of vehicle > driver
According to the 2004 Ford Taurus Owner Guide : With engine oil filter change : The 3.0 liter " Vulcan " V6 engine takes ( 4.5 quarts ) The 3.0 liter " Duratec " V6 engine takes ( 6.0 quarts )
The spark plug gap, for your 2004 Ford Taurus 3.0 liter engine, is .009. Most spark plugs will come pre-gapped.
I'm not a mechanic / technician but on a 2004 Ford Taurus if you have the 3.0 liter DOHC " Duratec " V6 engine you would because it has a timing chain going to each cylinder head
The standard alternator on a 2004 Ford Taurus is 130 amps. When upgrading a system major audio components the many times the alternator will need to be upgraded as well to provide more required amperage.
Needing the location of the flasher on a 2004 Taurus
The 2004 Ford Taurus has 12 valves.
The 2004 Ford Taurus has a V6 engine.