Does anyone have an opinion, positive or negative, about Redline products? I have a 2008 550i 6MT and am getting ready to change and use the following:
Engine Oil: Redline 5w-30
Differential: Redline 75w-90 GL-5 Gear Oil
Trans: Redline D4 ATF
Coolant: BMW Coolant with Redline Water Wetter...