It turns out that PQIA did test Amsoil Signature Series 5W-30 in 2012 but I hadn't gone that far back in PQIA tests when I made the list. Here are the numbers. Note that 2017 Amsoil Signature Series 5W-20 using Amsoil data exactly ties the discontinued 2013 Pennzoil Ultra 5W-30 using POIA data:
Originally Posted By: Rockrz
How come they just tested Amsoil OE and not their higher grade oils?
BOQI DV-30 NOACK Date Oil 79.2 3,827 6.60 2013 Pennzoil Ultra™ 5W-30 API SN ILSAC GF-5 (PQIA data, discontinued) 79.2 4,008 6.30 2017 Amsoil Signature Series 5W-20 (Amsoil data, 2017 formula) 77.4 3,398 7.60 2012 Amsoil Signature Series 5W-30 (PQIA data, 2012 formula) 67.4 3,954 7.50 2017 Amsoil Signature Series 5W-30 (Amsoil data, 2017 formula) 37.1 4,945 10.90 2013 Amsoil OE 5W-30 API SN ILSAC GF-5 (PQIA data, 2013 formula) ? ? ? 2018 Reformulated Amsoil Signature Series 5W-20 (Amsoil data, 2018 formula) ? ? ? 2018 Reformulated Amsoil Signature Series 5W-30 (Amsoil data, 2018 formula)
Do you mean that there is a new version of Amsoil Signature Series coming up? It will be interesting to see how their BOQI numbers will look like but they seem to have been coming down over time.
Originally Posted By: Wick
Those nubers are from Signiture Series just last week they were formulating with those numbers