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01-12-2011, 06:58 PM | #1 |
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Public Service Announcement: Differential Fluid
I've been looking to replace the differential fluid in my car... Castrol SAF XJ 75W140 that is.
Called two BMW dealers in town, last year it was only available in 55 gallon barrels, this year it is available in 0.5L quantities, but here's what I was quoted: Dealer A: $80/bottle Dealer B: $50/bottle (parts guy said this is still cheaper than bringing the car in) Luckily I googled "Castrol SAF XJ", and apparently the C63 uses the same fluid. So I called the Mercedes dealer in town and was quoted: $17/bottle End of public service announcement. P.S.: Thanks AMG |
01-12-2011, 07:00 PM | #2 |
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wow no AMG mark up?
Nice
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01-12-2011, 07:04 PM | #3 |
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WOW.... Good Call
I sure hope BMW Big Brother and its Stealerships are looking at this
Thanks for the info AMG price FTW
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01-12-2011, 07:13 PM | #4 |
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can someone pls tell me how often differential fluid has to be changed on this car? is it same everytime with engine oil? So if i wanted to change engine oil in between service like say, every 7k instead of the warranted 15k, should i change differential too?
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01-12-2011, 07:19 PM | #5 |
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What's the time/mileage interval for this fluid change?
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01-12-2011, 07:42 PM | #6 |
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Per BMW, these fluids are life-long, but I would like to change them once in a while...
4.0 Oil Change Intervals Maintenance requirements per the vehicle’s Service Booklet or the respective Service Maintenance Checklist. Replacement final drives: same as for new vehicles. All models as of 9/97 production are factory-filled with synthetic rear axle oil having a long-life service rating. No oil changes are required for the life of the vehicle. |
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01-12-2011, 08:25 PM | #7 |
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The Tech Talk guy suggests every 30k miles. That's what I did on my E46 M3.
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01-12-2011, 08:32 PM | #8 |
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Your Diff is going to explode into a million pieces with the Mercedes branded oil :P
Good deal, thanks for posting.
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01-12-2011, 08:54 PM | #9 | |
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Quote:
The better question is if the MB fluid has the extra additive or not. Do you know? If yes, I'd change mine immediately. Thanks man . |
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01-12-2011, 09:15 PM | #11 |
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01-12-2011, 09:28 PM | #12 |
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01-12-2011, 09:30 PM | #13 | |
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My DCT has stock SAF-XJ and does not make any noise. My 6MT did make noise, however. The MB fluid is the typical SAF-XJ and does not have FM booster. |
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01-12-2011, 10:31 PM | #16 |
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Should be....
I changed my diff and tranny fluid when I bought the car used with 17k miles. I plan on changing the diff fluid again at 30k miles. 3k miles to go.
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01-12-2011, 10:44 PM | #17 | |
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Quote:
http://www.m3post.com/forums/showthr...erential+fluid
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01-12-2011, 10:45 PM | #18 |
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Amsoil has a 75W-140 for $12.00.
https://www.amsoil.com/storefront/svo.aspx |
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01-13-2011, 01:44 AM | #20 | |
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Indeed. But a ton of cars develop that noise. Mine started to do it with only 4K+ miles on the oil, and I drive the car like a grandpa compared to most of you here . Honestly rather put Redline, RP or something with FM than stock (all are 75/140 gear oil). I'm not spending $50 a freaking pint when I'm going to change the oil every 2 years at 8K miles or so. Take care. |
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01-13-2011, 02:42 AM | #21 |
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Note that Castrol don't make the SAF-XJ with extra friction modifiers, its a third party formulation and that Castrol generally don't recommend extra oil changes for the SAF XJ diff oil over and above the scheduled changes.
Also the typical diff groan is more likely to appear in a lightly used car especially one that does most of its miles on the highway. |
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