Trying to decide if I can use this 8 year old oil to top off in my Limited Slip (non G80) rear axle. It seems to disperse well once I shake it up. Any thoughts if this is Friction Modifier/Additive or maybe the grape scent GM puts in their oil?
haha, yeah, I always thought that was odd gimmick for selling this oil ... all good points on the additives. Not sure if it makes a difference, but the truck is also 8 years old and yes, the bottle was half used, then stored.
The explanation I heard was because factory workers that had to fill the diffs on new vehicles complained of the smell so they added a scent to it to make it less unpleasant, I recently changed the gear oil on my 2008 Trailblazer and it was really filthy I wasn't sure if it was the factory fill or not, but I didn't smell anything other than regular gear oil, would the grape scent go away after 14 years and 175k miles?
the bottle still has the grape smell as does the axle when I pulled the plug to check the level. When I buy a new bottle, the OEM manual from 2004-2012 U.S. Colorado's calls for this (old # 89021677) new #10-4016/88900401, but it does not distinguish for LS or G80's. From all the research here and other truck forums, I am completely confused if I need to add some Friction Modifier/Additive (#1052358). Thoughts?