Tried finding clear answers to this with site:bobistheoilguy.com or f30.bimmerpost.com . In any case my BMW has xDrive with an open front and rear differential and a transfer case in between.
For the sake of this discussion I am only interested in the rear and front differential. Using RealOEM I see the front differential apparently uses
Hypoid axle oil G2 BMW Part No 83222413511. The rear specs Hypoid axle oil G1 BMW Part Number 83222295532, which I believe is a GL-4 oil.
Redline Oil Selector recommends their 75w90 gear oil (with friction modifiers) for both the front and rear. Motul recommends GEAR 300 LS 75W-90 for front and rear as well. Amsoil does not provide a recommendation at all. I would have just gone straight Delvac 1 if I could.
I'd rather not go OEM - the price is ridiculous. As I understand it, mixing GL-4 and GL-5 probably isn't recommended. The differentials are supposedly lifetime fill, but if they have a fill bolt I would rather change them at 60k or 100k intervals. Can anyone provide more clarity here or guidance as only the internet can? I'm pretty brand agnostic.
For the sake of this discussion I am only interested in the rear and front differential. Using RealOEM I see the front differential apparently uses
Hypoid axle oil G2 BMW Part No 83222413511. The rear specs Hypoid axle oil G1 BMW Part Number 83222295532, which I believe is a GL-4 oil.
Redline Oil Selector recommends their 75w90 gear oil (with friction modifiers) for both the front and rear. Motul recommends GEAR 300 LS 75W-90 for front and rear as well. Amsoil does not provide a recommendation at all. I would have just gone straight Delvac 1 if I could.
I'd rather not go OEM - the price is ridiculous. As I understand it, mixing GL-4 and GL-5 probably isn't recommended. The differentials are supposedly lifetime fill, but if they have a fill bolt I would rather change them at 60k or 100k intervals. Can anyone provide more clarity here or guidance as only the internet can? I'm pretty brand agnostic.