Also at Repco
in Australia, 7 to 13 December
Castrol Edge 5W-30 A3/B4 Full Synthetic with MB 229.5 and BMW LL-01.
45% Off, $69 for 10L
Valvoline Engine Armour 15-W40 semi-synthetic that is API SN and ACEA A3/B3/B4
50% Off, $23 for 5L plus you get a free Repco oil filter (standard PCMO sizes).
I missed the Castrol GTX 15W-40 UltraClean that was $15 for 5L, but only 7-8 Dec.
BTW here is a link to a Valvoline EngineArmour data sheet. It's from Oz but a few years ago (2013), I was told by Valvoline that they improved the formula recently to increase the synthetic content to be equal to DuraBlend. I hope the also increased the TBN to ~ 10 (B4 level), because in the data give the TBN is only ~ 8 (B3 level). I suspect they have as Valvoline told me that DuraBlend was only being sold to garages and workshops now in Oz and so they have improved the quality of their Engine Armour to fill this gap. (EngineArmour PDF)
KV100 = 15.1 cSt
KV 40 = 116 cSt
Noack = 9.7 %
KV100 = 15.2 cSt
KV 40 = 102 cSt
Noack = 12.8 %
I've used the 10W40 EngineArmour / DuraBlend semi-synthetic before, but the 15W40 looks much the same but with lower Noack volatility.