Hey everyone, got a question about GC and the specs it meets. I know from the Castrol website and MB service documents that GC 0W-30 Euro formula meets their 229.5 spec. However, I have 15 bottles of GC that are in the old red label bottle, which only go up to 229.3. These don't have the 'European Formula' tag on them. The date codes on these bottles are current from Feb. 2010. Is there a difference in the formula to meet MB 229.5 from 229.3? I plan to use it in a '07 E350 I just want to be sure it is OK for warranty. Are the bottles different here in Canada? Thanks