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Old 12-02-2012, 11:55 AM   #9
Scooby Specialist
Member#: 322264
Join Date: Jun 2012
Chapter/Region: Tri-State
Location: Webster, NY
2012 Impreza Sp 5sp
Obs Blk Prl/Drk Gray Mtl


Originally Posted by finklejag View Post
Most of Mobil 1 oils are mixed group III/IV these days. Even Amsoil's OE and XL lines are group III.
I'm confident that the Amsoil OE I'm using, on a 5k mile OCI, will serve my car well for its lifetime. But when I do my next oil change in 4k miles (with the odometer at approximately 12k miles), I plan to send a sample into Blackstone for an analysis, just to make sure.
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