Originally Posted By: Rocko1
Looking to exchange all my power steering fluid in my 08 Ford Expedition. It calls for Mercon V fluid. 1) What is a good brand of fluid? 2) Are all Mercon V's synthetic? Thank you.
1. It's hard to say since we have very little information (in terms of used fluid analysis, etc). Any fluid that's Mercon V certified by Ford is supposed to be up to Ford's standards, so I wouldn't worry about it too much. If you want the safest and most tested fluid, IMHO, get Motorcraft Mercon V from a Ford dealership.
2. Most of synthetic ATF's that claim Mercon V compatibility are multi-brand ATF fluids. A lot of them, probably do not even have Ford's Mercon V certification. It seems like no one wants to produce a synthetic ATF formula targeted specifically at Mercon V users. If you want synthetic, take a look at Mobil 1 ATF (it's sold at AAP, about $10 a quart).