I'm getting ready to replace the struts on one of my vehicles using a set of ampro T70570 coil spring compressors:
I had vaguely remembered reading somewhere that it's a good idea to oil the threads, and found more than one reference to doing this.
Before each use inspect, clean and lubricate threads on threaded shaft.
or
Lubricate threads on spring compressor with engine oil.
Could I use any oil, like WD-40 or a moly grease, or does it really need to be specifically engine oil?
Also, why do the threads need to be lubricated?
My particular tool did not come with any instructions.