Stupid.
Or in other words, "The major load carrying bearing surfaces are non-ferrous, as are the pistons and possibly the cylinder walls too, so "magnetic" oil would not be attracted to those surfaces. It's probably something that was dreamed up by a twit in marketing who doesn't know what he's talking about."
* I do think a magnetic oil drain plug has its benefits...
e/ - Apparently some of these magnetic oils are actually ferrofluid, which simply changes properties after heated...
""Castrol Magnatec" oil isn't magnetic ferrofluid: it changes its properties with temperature (sticks to hot bits)"
I can remember some tv ad - they took regular oil and put a little in a just warmed pan and you watched it spread out away from the hot spot. Then they dropped some in a different hot pan and you see it attract to the warm spot.
This post was edited by said_aouita on Feb 16 2016 10:09am