[GENAU]

I'm looking to do a large service at 100k next month. This includes fluids for the front and rear differential, transfer case, transmission, coolant, and spark plugs. I've attached everything I'm buying with a few questions, primarily if I'm missing anything or purchasing anything objectively wrong. I have everything for the brake fluid as well. That is everything but the time to get around to doing it...

• (7x) Lifeguard 8 ATF
  I know my cart has 6, I have one left from last time
  
  
• (1x) ZF Oil Pan and Filter Kit
  
  
• (2x) S-TEC BMW Differential Drain/Fill Plug
  Does this apply to the transfer case as well?
  
  
• (3x) Rein Magnetic Differential Drain/Fill plug
  One magnet for ea. fluid container. Its double the cost with the magnet and I'm slightly suspicious of it really doing anything material.
  
  
• (6x) NGK spark plugs
  
  
• (1x Liter)Shell BMW DTF1 Transfer Case Fluid
  As I understand this is the BMW DTF1 but with a different sticker on the bottle and $25 cheaper
  
  
• (2x) QuartRed Line 75W85 GL-5 Gear Oil
  This is good for both rear and front differentials? There seems to be some debate between that and the BMW brand...
  
  
• (1x) G-48 Zerex coolant
  I'll buy this locally, its very expensive from FCP

[Cytoplasm0671]

The front and rear differentials officially take different oil. Personally I do things by the book and bought the expensive BMW Hypoid oil for my rear differential.

[AspektUSA]

Originally Posted by Cytoplasm0671

The front and rear differentials officially take different oil. Personally I do things by the book and bought the expensive BMW Hypoid oil for my rear differential.

Same, you only need 2 bottles for the rear.

[GENAU]

Originally Posted by AspektUSA

Same, you only need 2 bottles for the rear.

Those two bottles are $125 rather than $40. I don't kind spending more for what is objectively better but in this case I'm unsure if it's that or simply confidence of buying the one with the roundel on it.

It's like the shell fluid I have on that list. As I understand it is identical to the BMW branded, but a third of the cost on account of the label.

[AspektUSA]

Originally Posted by GENAU

Those two bottles are $125 rather than $40. I don't kind spending more for what is objectively better but in this case I'm unsure if it's that or simply confidence of buying the one with the roundel on it.

It's like the shell fluid I have on that list. As I understand it is identical to the BMW branded, but a third of the cost on account of the label.

Don't disagree, but I also don't mind all that much since it's service you do once every 50k mi or so. Can't ever go wrong with OE fluid.

If I had to do it again, I'd get this: https://www.blauparts.com/ravenol-ge...8YcXe2Js0ZoC3U

You only need about 850mL to fill the rear diff, so one bottle will do you.

Here's what my rear diff looked like at 45k mi:

[GENAU]

Originally Posted by AspektUSA

If I had to do it again, I'd get this: https://www.blauparts.com/ravenol-ge...8YcXe2Js0ZoC3U

Any reason that brand? I've never seen it before.

[AspektUSA]

Originally Posted by GENAU

Any reason that brand? I've never seen it before.

They're like German Motul, or Liqui Moly's main competitor apart from ROWE.

It's cheap for what you get, and the bottle design is good as it has an integral filling spout.

Using the 200mL syringe I have made the job just a little more tedious.
However, you do need one in any case to suck out the old fluid.

The FCP Euro diff tool worked great to get to the bottom of the casing.

[nh90crxsi]

That list looks good, however I do agree with just spending the money for OEM fluid, it’s not a service you do all the time. I went OEM with the exception of using Liquimoly Top Tec 1800 for ATF