According to their web sites they are only GF-4.
http://www.valvoline.com/products/consumer-products/motor-oil/full-synthetic-motor-oil/5
http://www.mobil.com/USA-English/Lubes/PDS/GLXXENPVLMOMobil1_5W-30.asp
Have free oil changes at GM dealers for another 15k on our 2010 Equinox. Have M1 full syn in now. After was going to try Synpower. Might try PP or Ultra instead even though my experiences with Pennzoil HM in my truck weren't great compared to MaxLife.
http://www.valvoline.com/products/consumer-products/motor-oil/full-synthetic-motor-oil/5
http://www.mobil.com/USA-English/Lubes/PDS/GLXXENPVLMOMobil1_5W-30.asp
Have free oil changes at GM dealers for another 15k on our 2010 Equinox. Have M1 full syn in now. After was going to try Synpower. Might try PP or Ultra instead even though my experiences with Pennzoil HM in my truck weren't great compared to MaxLife.