Posted From: 188.8.131.52
|Posted on Saturday, 02 May, 2015 - 09:06: |
This is a hoary subject because in general most engineers say no.
However some additives do work.
A useful range is the ones that soften lip seals and expand them a bit.
These additives are fussy where they work.
Steering boxes seem to like it but racks don't.
Autoboxes respond well.
I use the additive until the leak stops and 50 miles for luck. Then change the oil.
But eventually the seal will leak again.
(Message approved by david_gore)