ORIGINAL: downunder
get Castrol M castor, it's absolutely the best you can buy. Here's a start.
I've just finished filming my oil tests which represent an objective analysis between the major model oils.
Some *very* interesting stuff was uncovered during this testing.
I'm currently editing the video and writing the corresponding text.
I think lots of folks will be rather surprised by some aspects of what I found -- suffice to say that *none* of the current folklaw in respect to the castor versus synth is 100% accurate.
I don't think anyone's done and documented an actual test of these oils like this before so I hope it will make riveting and eye-opening reading and viewing.