New rear differential
Hello everyone, I just wanted to let everyone know that my rear differential had to be replaced because I believe the locker was not working properly or loose as it made a thump every time I went around a corner or from reverse to forward. Just a FYI. Have not seen the bill yet but I believe it is in the neighborhood of 7k installed.
will be performing a diff fluid change on my 2020 p400 as the knocking is getting annoying. I suspect the clutch packs are kaput so I lined up a replacement E diff found locally while I sort this one out with better quality parts. Some things that really bother me regarding this is. Its common.... A lot of broken Range Rover ediffs out there. And theres no way to service this assembly--theres no manuals, no information, nothing from JLR.
on a more positive note, a harbor freight opened recently.
going to use ravenol MDF for this oil change. reusing the plugs but cleaning and using thread sealer.
Wish me luck.
on a more positive note, a harbor freight opened recently.
going to use ravenol MDF for this oil change. reusing the plugs but cleaning and using thread sealer.
Wish me luck.
Last edited by Defendit..; Nov 14, 2025 at 02:42 AM.
Very competitive and normal available, the Castrol BOT720 was expensive and difficult to get.
Payed $ 18,- / L incl. shipping. It takes 1.6 L for a oil change. So next time I'am a little short and use 0.2 from the old oil.
No experience with the brake fluid but I suppose it will be good and save to use.
Christian from LR time on YouTube uses also Ravenol on the Disco 3/4
Payed $ 18,- / L incl. shipping. It takes 1.6 L for a oil change. So next time I'am a little short and use 0.2 from the old oil.
No experience with the brake fluid but I suppose it will be good and save to use.
Christian from LR time on YouTube uses also Ravenol on the Disco 3/4
The ediff fluid is very exacting. as are the clutches apparently
so long as Diff fluid meets the same exacting spec it’s all good.
I’ve only used OEM in the one rear eDiff fluid change I did. Oil was as black as the pits of hell. I’m due another in a bit.
I think every 25k miles is what is reasonable on theses delicate high price items.
My thinking is based on zero data.
Brake fluid. DOT4. OEM is the same specs as any DOT4. Price is comparable so I have OEM on hand.
so long as Diff fluid meets the same exacting spec it’s all good.
I’ve only used OEM in the one rear eDiff fluid change I did. Oil was as black as the pits of hell. I’m due another in a bit.
I think every 25k miles is what is reasonable on theses delicate high price items.
My thinking is based on zero data.
Brake fluid. DOT4. OEM is the same specs as any DOT4. Price is comparable so I have OEM on hand.


