FIX MY FOX
by Matt Highley, Fox Mustang Restoration
Q
FLUID VS. FLUID
My mechanic recently told me not to use power
steering fluid in my Fox’s power steering system. He said
to use transmission fluid. I told him he was crazy, but I
did some research and it seems he may be right. Can you
shed some light on this subject?
Max Shanley
Fincastle, VA
A
Your mechanic is correct. On pretty much all
pre-’98 Fords, you should use transmission fluid in
the power steering — but not just any transmission
fluid; it needs to be Type F. It has to do with the
viscosity rating. Power steering fluid is slightly
thicker, causing the pump to work harder than it’s
designed to work. It can also cause leaks due to the
fluid being thicker, causing higher pressures against
the seals.
Q
CALIBRATE THIS
My friend gave me a Pro-M mass air meter to use on my
Mustang. It’s a ’91 five-speed with an A9L computer. I know
there are different calibrations for \