FYI- from
http://WWW.GMdexos.com with regard to 5w20 dexos:
Greg, I just received the detailed information so including it here, so that you can look up the actual service bulletin from June. We do expect another Service Bulletin to come out from Powertrain Engineering shortly, so you can watch for that.
Direction from Powertrain Engineering is that dexos1® 0W20 is suitable for Service fill where dexos1® 5W20 was used. This will allow our Dealers to inventory one less Oil Viscosity.
This is from a Service bulletin released on June 27, 2013
Document ID: 3471215
#13-00-90-001: Information for Engine Oils Used in 2014 Model Year Vehicles - (Jun 27, 2013):
Question: Can Service Agents stop using/selling other oil weights in lieu of dexos1™
0W20 oil?
Answer: That’s an individual decision that GM Service Agents will need to make based on
the vehicles they are servicing. GM Powertrain has approved the use of 0W20 oil for
applications specifying 5W20 oil.
Again, please let us know if you have further questions.
Mike K.
http://www.GMdexos.com This document may contain legally privileged or confidential information and is intended only for the use of the parties to whom it is addressed. If you are not an intended recipient, you are hereby notified that any disclosure, copying, distribution or use of any information in this document is strictly prohibited. If you have received this document in error, please notify the sender and delete it immediately.
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From: dexos
Sent: Wednesday, October 30, 2013 2:56 PM
To:
grega@tracymotors.comSubject: 0W-20 dexos(R) to replace 5W-20
Greg,
I ended up talking with Chris Crosby @ CCA on your question.
He is going to send me the actual service announcement where they talked about 0W-20 replacing the 5W-20 (it was an announcement in June timeframe about the 2014 trucks), but you are definitely ok to move to the 0W-20. Chris actually mentioned that the supply chain of 5W-20 is running low.
It doesn’t sound like a technical bulletin has been issued, and Chris couldn’t tell us when something might appear in print.
I will forward that information on when I receive it, but please let me know if you have further questions.
Best regards,
Mike
Michael E. Kunselman
Center for Quality Assurance (CQA)
Phone: +1 989 496-2399 x255
http://www.GMdexos.com This document may contain legally privileged or confidential information and is intended only for the use of the parties to whom it is addressed. If you are not an intended recipient, you are hereby notified that any disclosure, copying, distribution or use of any information in this document is strictly prohibited. If you have received this document in error, please notify the sender and delete it immediately.