2004 Lincoln Aviator - what size jack?

If you are asking that question I wonder if you should really be doing this repair .

You need at least 2 ton floor jack - 3 ton is better . You will need jack stands and not ones from harbor freight or Walmart. Then you will need new fluid that has to be bled of all bubbles.

I suggest you call a few places for a ball park price and do you actually know the thermostat is your problem ?

3 Likes