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Neil_S

Transmission and Differential Oil Change on an E46 330i (6 speed gearbox)

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Hi neil,

firstly great write up fella! I was wondering where you brought the oil extractor from. I had a nightmare extracting the oil out of my s/c ended up syphoning it out by mouth which was nasty nasty and the tool shown above would do the job very nicely.

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Hi neil,

firstly great write up fella! I was wondering where you brought the oil extractor from. I had a nightmare extracting the oil out of my s/c ended up syphoning it out by mouth which was nasty nasty and the tool shown above would do the job very nicely.

http://www.machinemart.co.uk/shop/product/details/tool-connection-tc4385-multi-purpose-mini-pump/path/lubrication-fuel-transfer-equipment

That ones from MachineMart, although I was wondering whether the one I posted would be the better buy

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Have many of you guys changed your gearbox/diff oil? How many of you used the Redline oil, and is it really that much better than another good brand of oil? Just struggling to justify the postage cost of £15 to N.Ireland for some Redline ATF from Opie opposed to dropping into my local shop and buying some!! :huh:

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Can never doo too much preventative work on a car.

Getting my gearbox and oil done on the 18th :-)

Will try and use this guide, but more realistically will invite a mate over to help and then just watch.

:) like your style!

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can i ask an embarassing question? where is the location for the drain plug/fill for the gearbox?

On my 330d the fill is on the drivers side of the gearbox casing, and the drain is right on the bottom below the fill. I found both the be 17mm hex (male).

I removed the fill bung first and then the drain, and no more than a cupfull came out! I swear the gearbox was running pretty much dry, and it took nearly 2 litres to fill...sealed for life eh BMW? :mellow:

Anyhoo, now full of Redline ATF and feeling slightly slicker already :thumbsup:

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Great write up!

Just wondering as mine is due and inspection in a few 1000 miles...

How much of the REDLINE D4 ATF would i need for a 325ci manual gearbox seeing as its 5 speed?

Not sure if it would be the same amount but im looking to get all the parts myself and have specialist change it for me

Thanks!

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Curious, why do the US forums recommend using Redline ATF (automatic transmission fluid) in a manual box?

Not sure but I think it has something to do with colder temperatures during winter. I spoke with Opie Oils for a recommendation and have gone with Redline MTL as recommended. Changing both diff and box fluid tomorrow.

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Changed both today, took me an hour taking my time (including the golf tee mod).

Digging around the web a little more it turns out that the recommendation for D4ATF relates to extreme temperatures (cold) in parts of the US. In very cold climes MTL can be a little too thick resulting in stiffer gear shifts until the oil is warm. D4ATF is thinner than MTL and helps with this issue but being thinner isn't as protective MTL at higher temps or other applications such as racing. The general concensus for Europe is MTL (if using Redline) as recommended by other areas of the US and Opie Oils in the UK.

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Went for it today and changed both gearbox and Diff thanks to Opie. Opted for the Redline MTL for the gearbox and 75w90 in the diff.

Considering doing CDV delete. Great DIY post thanks

just a little pic....

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Edited by Jonathanxy
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