Hey chasgood - Never knew this difference in syn's before you discussed it. I have been using Quaker State syn and Mobil 1 syn for years in all my cars including my old '01 PT. Question - is this distinction of group III, group IV identified on the oils bottles so the consumer knows what they are buying?
Inferno Red GT Auto-Stick - Chrome Grill, Chrome Rear Mud Guards, Chrome Beltline, Chrome Wheels, Magnetic Flames
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