I know this isn't new or important news, but I just found it interesting.
It appears from this 2015 PDS that Castrol GTX 10W-40 has a HT/HS value of 3.6, which technically makes it an A3-level oil.
https://msdspds.castrol.com/bpglis/FusionPDS.nsf/Files/A9EED664E7A92C4E80257EC60063BBB1/$File/BPXE-A2ZRG9.pdf
I found this interesting, b/c 'normal' 10W-40's are 'minimum 2.9' HT/HS.
GTX oil seems to have a fairly stout add-pack, so this 10W-40 PCMO is more like a HDEO than not. Might be a good option for those looking for a stouter oil.
It appears from this 2015 PDS that Castrol GTX 10W-40 has a HT/HS value of 3.6, which technically makes it an A3-level oil.
https://msdspds.castrol.com/bpglis/FusionPDS.nsf/Files/A9EED664E7A92C4E80257EC60063BBB1/$File/BPXE-A2ZRG9.pdf
I found this interesting, b/c 'normal' 10W-40's are 'minimum 2.9' HT/HS.
GTX oil seems to have a fairly stout add-pack, so this 10W-40 PCMO is more like a HDEO than not. Might be a good option for those looking for a stouter oil.