GM Reference Test Services
Here you will find links for reference oil distribution and test report processing for laboratories conducting reference oil tests that are required before dexos™ candidate tests are run.
Use the "Contact Us" button at the top right if you have specific reference oil or test questions.
Control Chart Graphs
Information Letters
Meeting Minutes
Memos
Oil Assignment Request
Reference Data & Timelines
Reference Test File Upload
Report Forms & Data Dictionary
Semi-Annual Reports
User Accounts
Test Registration
Test Registration Center
Quick Links
Engine Build Manual
Engine Hardware Control
Price Schedule
Test Monitoring System Manual
Test Registration Manual
GMOD Matrix Info
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