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Gearbox oil

Discuss problems you have had or are having with your Z4
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jamesditchy
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Gearbox oil

Post by jamesditchy » Sun Sep 24, 2017 3:02 am

I'm wanting to replace the gearbox oil on my manual box. Can anyone recommend the correct oil to use and how much it takes. Cheers Jay
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mjennings23
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Gearbox oil

Post by mjennings23 » Sun Sep 24, 2017 10:24 am

I used Millers 75w80 in mine, same viscosity as factory fill and a brand I trust to make very high quality oils.

G600
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Gearbox oil

Post by G600 » Sun Sep 24, 2017 10:28 am

Capacity is about 1.5l
E85 3.0

Scooba_Steve
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Gearbox oil

Post by Scooba_Steve » Sun Sep 24, 2017 10:35 am

If it meets the spec you can't go wrong. But there is the argument that the BMW fill favours economy over protection, so don't be afraid to go to other reputable brands with similar viscosities.

Either way, changing it is better than leaving it in. Mine wasn't nice but didn't appear to have much in the way of metallic particles in, though I didn't have it analysed.
3.0si Sport: F10 Illuminated ZHP, Retrofit Cruise, OE Stubby, Gaptech RCH+, Kenwood BT73DAB + Handsfree, HIDs, LED Sidelights, OE LED Number Plate Lights, Custom LED strip bootlight.

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