OMG!!! My first day of scavenger hunting to 8 different local autozones in TX led me to found 16 qts of GC GREEN!! I bought 20 qts total of the GC but i think 4 of them are the gold ones... I do have some questions but first let me tally up what i have... i have 4 GC that has the date code of M05075XXXX. i have 6 of M04280XXX. I have 4 of M03042XXX. I have 6 of M02338XXX. Questions for you GC experts. 1)Is the M02338XXXX's shelf life still good to be used in a modern 06 engine? 2)I noticed that the front labeling of the M03042 and the M02338 is different from the M04's. The label on the older ones had "Protects in ways other oils cant!"... does this sound right? I only know of the "outperforms" label. But all of them had made in germany on the back. 3) Is M05075XXXX green or gold? My observations while finding GC... New 0w-30 GC with the "European Formula" on the back has MB229.5 and no porsche approval on the back. GREEN GC and older GOLD GC has the porsche and only MB 229.1 and 229.5. My advice for green gc hunters... go to the most ghetto-looking autozone in the neighborhood!!! The GC greens i found were in the most ghetto part of the suburb. The bottles were all dusty and looked pretty old. Thanks for any comments, answers, BITOgger's!Welcome any questions.