Recently did a flush and thought I'd try g13. Have been running a week odd and must say the result has been very disappointing to say the least. Coolant temp on average is higher, can't run my air con with coolant teno soaring too 100c and have also noticed my oil temp is now averaging 100c as opposed to 94-96c. Has anyone else has any issues with this coolant? I'm ready to dump and go back to my old brand...