Re: 04 Taurus Motor Oil
> 2004 Taurus. 5W20 recommended. Using fully synthetic 5W30.
> Aside from a slight decrease in fuel efficiency, any possible consequences
> of which I should be aware?
Only consequence I can think of is that by the time your engine
accumulates 300,000 - 400,000 miles, the rest of the car will be rusted
out or falling apart.
If the Taurus is driven regularly and for distance driving(35K-40K mi.
per year), you can get 18,000 to 20,000 miles per oil change too.