Front Differential Oil Change - 2003 C4S

[builder1]

I changed the gear oil in my manual transmission last week with the intention of changing the front differential gear oil. Once I got a look at the front differential I was unable to determine where the fill plug in the drain plug is. There are forums here that talk about 997 and turbos but I cannot find anything in detail on the 996 C4S. If anybody could help with some detail that would be appreciated.

[JFP in PA]

Completely covered, with photos, in the Bentley 996 manual, starting on page 39-8.

[builder1]

Thanks for the response - I am a newbie and don't have that manual - any quick suggestions - transmission was easy - I'm only going to do basic stuff myself - so I prob won't buy the manual - thanks

[djantlive]

Should be straight forward. Always keep the car leveled when filling the trans or diff to ensure you have the correct amount

[builder1]

Gearbox was easy, but I cannot find or determine where/what are the fill and drain plugs for the front differential - I was hoping someone could just describe and/or show a photo. Thanks

[dtw]

Drain plug is at the back of the diff, pretty much in plain sight. Fill plug is harder to find; it is next to the right/passenger side output flange, oriented toward the front of the diff and car. See photo. I just did this job yesterday, took almost 2 bottles of fluid. Note - output flange not pictured. I removed both my flanges to replace the seals.

17mm wrench for both plugs.

[builder1]

Thanks so much for the help - I rea appreciate it. Sorry it took a while for me to get a response back.