I just received the HT/HS numbers from Valvoline for their 5w-30 and 10w-30 oils. I thought i'd pass it along to you all.
Their pds don't indicate it but the Synthetic Maxlife could be rated A3/B3
5w-30 / 10w-30
Premium Conventional--2.9 / 3.0
DuraBlend-------------3.0 / 3.1
MaxLife Blend---------3.0 / 3.1
MaxLife Synthetic-----3.5 / 3.6
SynPower--------------3.1 / 3.2
Their pds don't indicate it but the Synthetic Maxlife could be rated A3/B3
5w-30 / 10w-30
Premium Conventional--2.9 / 3.0
DuraBlend-------------3.0 / 3.1
MaxLife Blend---------3.0 / 3.1
MaxLife Synthetic-----3.5 / 3.6
SynPower--------------3.1 / 3.2