Originally Posted By: 08sienna
so did they thicken up the synpower 5w30 and 5W-20 ?
5W-20
Vis @ 100°C (cSt) 8.65 --> 8.7
Vis @ 40°C (cSt) 48 --> 48.1
VI 160 --> 161
5w30
Vis @ 100°C (cSt) 10.5 --> 10.7
Vis @ 40°C (cSt) 59 --> 59.5
VI 169 --> 172
We'll never know if the formula actually changed, or if they did more testing and updated the results...but every time they revised the pds since sn/gf5 came out, numbers have changed.