In my lubricants training long, long ago, I was taught that viscosity of oil is a result of the molecule size. I'm sure that was over-simplified then and way over-simplified with today's oil chemistry.
To the extent that it's still true, I understand the analogy of considering that a xW-30 be considered like golf ball size, xW-50 considered like volley ball size, and mixing them does not yield baseball sized molecules.
Mobil said that they
can be mixed. Did they say that mixing would yield a better performing product? Amsoil doesn't recommend mixing...didn't say that they must not be mixed.
I don't see a conflict. I'll buy an oil that meets all my criteria instead of mixing some home brew. If I want a 40wt, I'll buy a top quality 10W-40 or 15W-40. If I want a heavy 30wt, I'll buy just that, or add some Schaeffer #132 to a light 30 (I know, violates my home brew rule
).
Ken
[ March 28, 2003, 01:05 PM: Message edited by: Ken2 ]
