Mixing dino & synth

[Todd Young]

I disagree with this. I've heard that some so called "semi-synthetic" 
are only about 15% synthetic, whereas when I mix it I know it's 50% 
synthetic (or at least very, very close). One caveat, if I'm using 
Mobil1 synthetic, I use Mobil regular.

Al Powell wrote:
>  Just make your next oil AND
> filter change at the recommended interval, choose one type of oil or another
> (or buy a purposely manufactured semi-synth blend) and re-fill.

-- 
Todd Young
7079 Dawn Ave. E.
Inver Grove Heights, MN 55076