http://www.scmotorsports.ca/public/OilTests.pdf

[SIZE=3]Street Commodores pulls out all the stops and tests 18 semi and fully synthetic motor oils and bring you the surprising results.

Oils that were tested[/SIZE]

Shell Helix Ultra 5W 40
Gulf Western Ultra 15W 50
Pennzoil GT Performance Semi Synthetic 10W 40
Fuchs Titan SuperSyn MB 5W 30
Motul Turbolight 10W 40
Motul 0W-40
Elf Excellium GP 5W 40
Mobil 1 0W-40
Mobil Synth S
Penrite HPR 5 Semi-Synthetic 5W-40
Red Line Synthetic 5W-40
Shell Helix Plus Semi Synthetic 15W-50
Elf CompetitionGT 10W-40
Castrol Formula R 0W-40
Valvoline Durablend 10W-40
Royal Purple 10W-40 Multigrade
Royal Purple R51
Penrite Synthetic 5 5W-60