My rear diff leaks horrible, smelly diff oil. Not an awful
lot, but it tends to collect and to run down the diff casing
and then down onto the A-frame mounting point. At that point
it covers the A-frame bushes and then they fall apart in
double quick time.
I got pretty bored of changing them, especially as the bushes
are a very tight fit on my Ford axle, due to the vertical
brackets being maybe a smiggen too close together.
To try to overcome the problem of changing the bushes I
decided to try some Polybush
versions as these are meant to be resilient to diff oil.
Some research led me to find out the part number required
was 3XC. When I tried to fit them they were too tight, perhaps
as they are less flexible than the normal rubber versions.
I carefully used a Stanley knife and a cut them down just
enough so I could force them to fit (i.e. they needed persuading
with a mallet to fit).
I can't say I noticed much in the way of a handling change,
The back end didn't roll any more or less than it did before.
However, at the time of writing the same bushes have now
been fitted for 2 years and shown no signs of degradation
- so in that respect, and the reason I fitted them, they
are a resounding success.
Old (black) Vs