Difficulty
Moderate
Steps
4
Time Required
In Progress
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Introduction
Learn how to do a BMW M3 E46 differential lluid change.
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14 mm hex (some older models have 12 mm size of bolt, so make sure to check before you buy your tool), floor jack and 4 jack stands, Torque wrench, Oil drain pan and Tranny/diff fluid pump (optional, not required).
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Parts: 3 bottles of SAD-JX + FM booster(Part# 83222282583), crush washer (part # 07-11-9-963-355) OR new plugs with O-Rings: part # is 33117525064 OR 2 new O-Rings: part # 07-11-9-963-355.
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Steps: 1. Go for a drive and warm up your car, it helps old fluid to drain completely. and 2. Jack up your front and rear end of car on 4 jack stands.
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Use 14 mm (or 12mm) hex to unbolt fill bolt first. When I unbolted fill bolt, little bit of fluid started draining a little bit, so make sure to have towel or oil pan ready to catch old fluid.
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Unbolt drain plug and let it drain for 30 ~ 45 minutes.
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After complete drain of the old fluid, put drain bolt back on. I noticed that drain/fill bolt has green rubber o-ring on them, but since I bought washer, I put them on and tightened to 48 ft-lb.
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According to Bentley service manual, torque spec for drain/fill bolts are: With O-ring: 60 Nm (44 ft-lb) and With sealing washer: 65 Nm (48 ft-lb).
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