Originally Posted By: splinter
Probably not the same per se but if the Dexron-VI ATF you’re contemplating contains the designated and mandatory ‘proprietary’ additive package,
maintains specified kinematic viscosities/properties, and its blender has paid the ante for appropriate licensing it’s okay to pour into my late model automatic GM gearboxes.
ymmv
background:
www.sandyblogs.com/techlink/techlink_May_09.pdf
&
current approvals:
http://www.gmpowertrain.com/vehicleengines/DEXRON-VI.aspx
Originally Posted By: Whitewolf
The base stocks are not limited as long as the finished lubricant uses a specifically approved additive package. The finished lubricant can therefore be either a synthetic or a mineral blend. Bear in mind that in North America a Group III stock can legally be described as synthetic, which is very confusing. As far as the DEXRON-VI fluid is concerned the complete formulation has to be declared to GM in the approval application and no change is allowed from there on. The DEXRON-VI specification is so tight that there is really no discernible difference between licenced products. Does that answer your question?
Thanks, splinter, the sandyblogs link is the most informative article I've read on Dexron VI. The approval list has expanded since the last version I've read.
Yes Whitewolf, I think that does answer the question, thanks. You're saying it may or may not be "true" synthetic, but it doesn't really matter.
Jimzz, the AC Delco gallon jugs I have are dated 9-14, some I have used already were dated 6-14.
I think the term "synthetic" is just used for marketing, so the Havoline product would appeal to people, the AC Delco product isn't trying to impress anyone, it is the manufacturer's own product.
Thanks to all who replied, I appreciate the input!!