I work at POTOMAC GERMAN AUTO RECYCLING.WE are having a problem with 722.6 transmission's coming out of car's.Some of the car's have red fluid while others have green fluid.Has there been an update in fluid.I have both part numbers****000-989-2103 and 000-989-4503****,due to i do not have a quart of this lying around and the mb dealer cant tell me the color.Any help with the fluid in these trans would be great.thank you