Hello, I am new here. Not gonna lie that I came here because I can't seem to find a definitive answer on what fluid and how much should go into the front and back differentials. Some sites say it needs 75W90, some 80W90, some mention that you need OEM oils, different say that synthetic is an okay replacement. Can someone tell me once and for all which oil to which diff and how much of it? Thanks.
EDIT:
When it comes to the car itself it has an FX37S badge on the trunk doors, but once I've been ordering some parts with a local supplier and after telling them the VIN they insisted it is QX70, not FX37 - I don't know what the difference is but it could be that it was one of the lasts FX37s on the line before they started putting QX70 badge on it. I'm saying this in case this changes anything with the differential oils and quantities.
EDIT:
When it comes to the car itself it has an FX37S badge on the trunk doors, but once I've been ordering some parts with a local supplier and after telling them the VIN they insisted it is QX70, not FX37 - I don't know what the difference is but it could be that it was one of the lasts FX37s on the line before they started putting QX70 badge on it. I'm saying this in case this changes anything with the differential oils and quantities.
