Pqia i thought was funded by petroleum companies.
Makes you wonder how good they are,if they don't have any info on Redline,that seems a little suspicious.
I'll check out your other link later,but here's one for you to check out to.
There's a few others,but i'll have to dig for them,and most of them rate Mobil 1 lower then Amsoil or Redline.
Mobil 1's base stock is a grade lower then either Amsoil or Redline as far as i've read,and i've done a fair bit of reading on oils in the last year