Originally Posted by
mrmuppet
Is this a correct substitute? Liqui Moly 1414 Fully Synthetic Gear Oil (Gl 5) Sae 75W-90
The fact that it meets GL5, probably is okay. However , I believe, the correct the MB part # is A 0019898303 or A0019893303.
The Ligui Moly website does not show an approved differential oil for our cars.
As for power steering I use Pentosin CHF 11S but it should be Pentosin PSF. Liqui Moly OL 3100 is approved by Mercedes. The Mercedes Power steering fluid is 236.3 ( it has many MB part numbers, depending your location)
Good Luck!