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gearbox and differential oil change
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gearbox and differential oil change
Hi
Having recently purchased Z4M Roadster I was looking at having all the fluids changed I have got the Castrol 10 -60 engine oil was enquiring what spec and manufacturer is best for the gearbox and differential .
Any additives required to go in the diff oil as I had a previous car with LSD and it needed an additive to go in the oil. Any parts required ie new seals for the sump plugs.
Having recently purchased Z4M Roadster I was looking at having all the fluids changed I have got the Castrol 10 -60 engine oil was enquiring what spec and manufacturer is best for the gearbox and differential .
Any additives required to go in the diff oil as I had a previous car with LSD and it needed an additive to go in the oil. Any parts required ie new seals for the sump plugs.
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gearbox and differential oil change
There is a label on the side of the gearbox for the spec of the oil
Yes there a friction modifier required for the diff oil.
I think I have posted the specs after I changed mine this would have been around May/June time
Yes there a friction modifier required for the diff oil.
I think I have posted the specs after I changed mine this would have been around May/June time
- AndyBeech
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gearbox and differential oil change
Gearbox I'm going for a combo of Red Line MTL + D4 ATF. A mix of the two gets pretty good reviews. 2 litres in total.
Diff I'm trying out Millers CRX Fully Synthetic Nanodrive NT + Plus Gearbox Oil GL4 GL5 MT-1 75w 140. Not for any particular reason but just felt like something else this time! 2 Litres again.
Can't buy new seals for the plugs, either a new plug or re-use. Supposed to replace I believe but sure using the same one again is fine.
Diff I'm trying out Millers CRX Fully Synthetic Nanodrive NT + Plus Gearbox Oil GL4 GL5 MT-1 75w 140. Not for any particular reason but just felt like something else this time! 2 Litres again.
Can't buy new seals for the plugs, either a new plug or re-use. Supposed to replace I believe but sure using the same one again is fine.
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gearbox and differential oil change
Hi
Thank you both for that information what ratios do you mix the two suggested products at before putting in the car.
Thank you both for that information what ratios do you mix the two suggested products at before putting in the car.
- RedUn
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gearbox and differential oil change
I use oem bmw fluids, never had an issue, not sure why you would mess around trying others but thats just me, simple
IMOLA Z4///MR
- AndyBeech
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gearbox and differential oil change
To be fair BMW stuff is only rebranded Castrol I believe so nothing ‘special’ as such. OEM stuff (especially fluids) I find to be ridiculously priced for what it is, but then can say that about most parts for this car!
OP, the diff oil is premixed so just add until full.
Gearbox I believe put all the MTL one in then fill up with the D4 until it’s full, probably have around half a litre left.
Z4MR - Gruppe M, Bilstein PSS10, CSL's + 18" CSL reps with semi's, RTAB Limiters, Powerflex’d, PF Camber Arms, K-Sport BBK / RSL-29, GC Camber Plates, Strut Brace, Exhaust valves, custom brake cooling, complete underside refresh!
- RedUn
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gearbox and differential oil change
Very true, the diff oil was quite specific from memory.AndyBeech wrote: ↑Tue Dec 17, 2019 4:43 pmTo be fair BMW stuff is only rebranded Castrol I believe so nothing ‘special’ as such. OEM stuff (especially fluids) I find to be ridiculously priced for what it is, but then can say that about most parts for this car!
OP, the diff oil is premixed so just add until full.
Gearbox I believe put all the MTL one in then fill up with the D4 until it’s full, probably have around half a litre left.
I can't remember how much I paid last time but it wasn't horrific, but maybe I've just got used to ///M tax
IMOLA Z4///MR
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gearbox and differential oil change
I found this post when I was looking into changing my Z4MR gearbox oil
viewtopic.php?f=9&t=99480&p=1455675&hil ... e#p1455675
viewtopic.php?f=9&t=99480&p=1455675&hil ... e#p1455675
- Argenta
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gearbox and differential oil change
"CDV delete" doesn't matter much on a Z4M (maybe on a Z4?) and I did not feel any improvement in gearchange whatsoever.
However, changing the gearbox oil did. Since the change it's like warm, from cold.
RedLine MTL 70W-80 - gearbox (don't put ATF oils in it - it's a manual for christ sake)
Motul Gear Competition 75W-140 - differential.
However, changing the gearbox oil did. Since the change it's like warm, from cold.
RedLine MTL 70W-80 - gearbox (don't put ATF oils in it - it's a manual for christ sake)
Motul Gear Competition 75W-140 - differential.
Last edited by Argenta on Wed Dec 18, 2019 6:06 pm, edited 1 time in total.
- AndyBeech
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gearbox and differential oil change
If you mean ATF as in the D4 a lot of people use it as an additive with good results, use it together with MTL. Opie Oils also recommended it to help smooth the gear changes out.
Z4MR - Gruppe M, Bilstein PSS10, CSL's + 18" CSL reps with semi's, RTAB Limiters, Powerflex’d, PF Camber Arms, K-Sport BBK / RSL-29, GC Camber Plates, Strut Brace, Exhaust valves, custom brake cooling, complete underside refresh!
- Argenta
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gearbox and differential oil change
Hehe sorry, slipped!
I just can't fathom why anyone would want something EVEN slicker than a Z4M gearbox with Redline in it.
I just can't fathom why anyone would want something EVEN slicker than a Z4M gearbox with Redline in it.
- RedUn
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gearbox and differential oil change
Just thinking about this, genuinely no one knows better than bmw, opie or not, I'd never advise anyone to mix oils, especially two different types. It might be alright for a while but who knows what damage it could be doing in time? Especially a gearbox that's engineered for changing at high rpm, you can feel the heat from it through the floor of the car, hence I'm not sure adding thinner oil is such a good idea, it'll feel better on a cold morning no doubt but what about when it's running at high temps under load?
For the cost of replacing a gearbox it's just not worth it.
IMOLA Z4///MR
- AndyBeech
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gearbox and differential oil change
I don't agree with that statement entirely, I think there's plenty of evidence that BMW don't always know best on everything! At the end of the day it's only opinions though, I've researched a lot over the last 6 months, internet (of course! ), spoke to a few specialists, other owners etc.RedUn wrote: ↑Wed Dec 18, 2019 6:50 pmJust thinking about this, genuinely no one knows better than bmw
Based on this I've made my personal decisions. All I would say is to anyone else is, do as much research as you can and make your decisions from there. Ton of information out there so use it your advantage, lots of real world experiences with different fluids.
FWIW I'll only be using a small amount of D4 with the MTL fluid. Also depends how much, if any, track work you do. Certainly nothing wrong with staying BMW of course.
I would say if Opie were recommending oils that were making gearbox's or otherwise pop they probably wouldn't have a very good rep! They've been in business a long time so have a lot of information and customer feedback on what works and what doesn't. But as said, research is key!
Z4MR - Gruppe M, Bilstein PSS10, CSL's + 18" CSL reps with semi's, RTAB Limiters, Powerflex’d, PF Camber Arms, K-Sport BBK / RSL-29, GC Camber Plates, Strut Brace, Exhaust valves, custom brake cooling, complete underside refresh!
- mr wilks
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gearbox and differential oil change
Id have to agree , most manufacturers aim to see their cars problem free through the warranty period , after that do they really care ? clearly not if you go by the service intervals they now deem satisfactory .AndyBeech wrote: ↑Wed Dec 18, 2019 9:03 pmI don't agree with that statement entirely, I think there's plenty of evidence that BMW don't always know best on everything! At the end of the day it's only opinions though, I've researched a lot over the last 6 months, internet (of course! ), spoke to a few specialists, other owners etc.
Based on this I've made my personal decisions. All I would say is to anyone else is, do as much research as you can and make your decisions from there. Ton of information out there so use it your advantage, lots of real world experiences with different fluids.
FWIW I'll only be using a small amount of D4 with the MTL fluid. Also depends how much, if any, track work you do. Certainly nothing wrong with staying BMW of course.
I would say if Opie were recommending oils that were making gearbox's or otherwise pop they probably wouldn't have a very good rep! They've been in business a long time so have a lot of information and customer feedback on what works and what doesn't. But as said, research is key!
Similar story with runflat tyres & in particular the chosen profiles Bmw have gone with for far too long when other manufacturers all run bigger ones on same sized rims & similar performance cars .
I switched previous 3 Z4Ms to Millers fluids for engine, diff & gearbox ( just went with the recommendations on the Millers website ) & i'l be doing the same when the 4th ZM arrives next week , ultimately its personal preference but i wouldn't do it if i didn't think it was a improvement over Bmw recommended ones
3 ZMRs
3 E89s
5 Si coupes
5 Si roadsters
997 C4
TTRS
F82 M4
MK7 Golf Gti
current Bmw 6 Gran Turismo
3 E89s
5 Si coupes
5 Si roadsters
997 C4
TTRS
F82 M4
MK7 Golf Gti
current Bmw 6 Gran Turismo
- RedUn
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gearbox and differential oil change
I love this forum for the different opinions!
For me, the gear change is fine, no need to change it but I appreciate others want to experiment.
Overall if someone thinks they know better than bmw that's fair enough, you pays your money etc just consider the buying power an oem like bmw has, if they wanted miller's it would be no problem.
One area where I do agree though is tyres they have clearly moved on in 10+ years!
For me, the gear change is fine, no need to change it but I appreciate others want to experiment.
Overall if someone thinks they know better than bmw that's fair enough, you pays your money etc just consider the buying power an oem like bmw has, if they wanted miller's it would be no problem.
One area where I do agree though is tyres they have clearly moved on in 10+ years!
IMOLA Z4///MR