I guess I angered the W123 gods today pondering buying the 560SEC I discussed earlier!Anyways I have been dreading this chapter of W123 ownership for some time now.I knew it was going out for about 2 months now but the time has come to change.
1)Should I bite the bullet and change both sides,or will one side be adequate? 2)At the tune of $500 for each side,honestly are there any drawbacks to refurbished ones for around $150-200? 3)What is the "BEST" differential SAE 90 hypoid gear oil available and recommended?I have no idea yet if its limited slip or not.If it is limited slip,do I have to buy the special MB lubricant from the dealer?My W123 is a 80 280E euro model just in case this info is needed!Any help will be greatly appreciated!! Thanks in advance.