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CTS · 11-22-2009, 09:24 AM

You can buy AMSOIL right from their web site and have it ship UPS to your door in a matter of a few days.

Synthetic 75W-90<---Have in my CTS and GMC
or
Synthetic 75W-110

11-22-2009, 09:24 AM	#9
CTS Drives: 2021 Sierra Denali 6.2L/10sp CC 4WD Join Date: Mar 2009 Location: Houghton, Michigan Posts: 234 View My Garage	You can buy AMSOIL right from their web site and have it ship UPS to your door in a matter of a few days. Synthetic 75W-90<---Have in my CTS and GMC or Synthetic 75W-110 __________________ Mike Synthoil Supply 2021 GMC Sierra Denali CC Ultimate 6.2L