pretty much done with my little oil testing....Conclusion: Amsoil SS, Redline, Pennzoil Ultra platinum...winner for me.. Pennzoil ultra Platinum. Kept the car oil temps cooler than the others, with redline having the hottest temps. Amsoil and PUP being pretty close to each other but PUP still better. I did a cool down test also. After purposefully getting temps around 225, shut the car off and let it sit for 10 mins...on start up redline was still 195, amsoil was 175 and PUP 170. Driving around city in 95dg with mild fun driving on highway, temps with redline easily reached 220...amsoil and PUP never broke 205...just my findings