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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 11-24-2015, 10:34 PM   #1
victorsal
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Best oil's for all changes.

Okay I'm changes my oil for my 325ci e46 standard. I wanna buy the best oil for the manual transmission. And the for the differential. Everyone says red line, but others say other brands. So I wanna ask my Bmw people what works the best for them. I live in Texas by the way. If the climate should help....
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Old 11-25-2015, 02:09 AM   #2
Antti
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I would say choose oil which for example castrol lubricant advisor tells you.

http://oilselector.castrol.com/c/us/usa/search

I put this oil for my e46 rear differential. It is standard rear diff without LSD.
I am not sure if you have this product in US.


Last edited by Antti; 11-25-2015 at 02:16 AM.
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Old 11-25-2015, 06:58 AM   #3
markusmarkus
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Redline MTL and be done with it. You'll need 2 quarts as the capacity is about 1.5 quarts. The differential uses 75W-90 lube. It takes EXACTLY a quart. My diff runs Redline 75W-90 for non-limited slip diffs.

When changing the tranny and/or the diff lubes ALWAYS remove the fill plug first! Why? If you drain the tranny/diff and can't get the full plug out you'll have an inop car!!!
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Old 11-25-2015, 07:58 AM   #4
Knight
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Originally Posted by markusmarkus View Post
When changing the tranny and/or the diff lubes ALWAYS remove the fill plug first! Why? If you drain the tranny/diff and can't get the full plug out you'll have an inop car!!!
Critical advice here. I've used Redline for years, but Valvoline and Mobil 1 75W-90 are also good options for the diff.
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Old 11-25-2015, 08:32 AM   #5
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I use half Redline 75w-90 and half Redline Shockproof in the diff, half Redline D4 & half Redline MTL in the gearbox. Not on purpose but because I had those left over from another car. I will change the 'box oil out for Pentosin MTF2 next year when it warms back up. Or not. Primary reason for shift improvement in my case was replacing the shifter bushings and shifter, and the ZHP knob.
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Old 11-25-2015, 11:14 AM   #6
lingon300k
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Originally Posted by victorsal View Post
Okay I'm changes my oil for my 325ci e46 standard. I wanna buy the best oil for the manual transmission. And the for the differential. Everyone says red line, but others say other brands. So I wanna ask my Bmw people what works the best for them. I live in Texas by the way. If the climate should help....
Redline. Maybe Amsoil. I've started to move away from Amsoil, but only because I find their marketing irritating.

Redline, in my opinion, is overkill for the engine on a daily driver. Especially if you change the oil at less than 10k.

I just did my differentials and automatic transmission with Redline, transfer case and power steering with Amsoil.

Also, if you've never done this before on this car, get new drain and fill plugs, and crush washers if necessary.

Last edited by lingon300k; 11-25-2015 at 11:16 AM.
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Old 11-25-2015, 12:13 PM   #7
hitbyastick
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Redline is badass if you are trying to keep sludge from forming, like, ever. It's just better than everything else, but not absolutely necessary. The synthetic ester basestock in the Redline is great for gradually cleaning an engine's oilways out and slowly dissolving sludge in the nooks & crannies, and restoring stuck oil rings. Worked for me at least, zero oil usage between 7k mi oil changes on a car with 150k on it that used to go through about a qt every 5k.

It's a pain to obtain and it costs a lot but DIY offsets the discomfort somewhat. Amsoil in my view is way overrated and just as annoying to obtain as Redline.
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Old 11-25-2015, 12:50 PM   #8
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In my experience, any discussion concerning motor oil is akin to Muslim and Christian fundamentalists trying to discuss the merits of their religions over tea.

But here I go.

As far as I've been able to tell, Redline is the best oil in North America. They have the highest quality base stock. I don't know how they compare to Euro oils like Elf and Liqui-Moly and Motul. I'd imagine that the best offerings from those companies are equal to Redline, or almost.

I've used Redline and Amsoil for transmissions, differentials, etc., but I've never used anything I had to order for the engine. (Not completely true, I once used Liqui-Moly because I had a coupon and I needed the extra items on the order to qualify for free shipping.)

I just can't get myself to go over 5k on an oil change, so I usually buy my oil at Walmart. Shell Rotella, Mobil 1 (High Mileage, Euro formula, Turbo Diesel Truck), Castrol (German made full synthetic).

I'm planning to do 7.5k on this car, but I might even go to 10k if I can stomach it, due to someone on here who had 500k on their car with (I can't remember) 10k or 15k changes.

If I do decide to go for 10k, I think that Redline will be the only way I'll be able to sleep at night.

But for longer change intervals like differentials, or something as complex as an automatic transmission, I can't see any justification for using anything but the absolute best fluid available.

For $80, though, I do really like the service at the dealership. They're sort of slow, always booked up, and extremely polite, so It's a rather pleasant experience with a brand new BMW for a day or two as a loaner. I don't have to do any work, and it's the same price as a change with Redline. I might do it again.
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Old 11-25-2015, 01:09 PM   #9
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when redline is $100 for 8 qts

and mobil1 is $50 for 10 qts


is it really a hard decision ?
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Old 11-25-2015, 01:16 PM   #10
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when redline is $100 for 8 qts

and mobil1 is $50 for 10 qts


is it really a hard decision ?
10 qts? are you planning on 10 years of oil changes for the OP? he drives a manual. the only e46 type that exists.
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Old 11-25-2015, 01:28 PM   #11
lingon300k
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when redline is $100 for 8 qts

and mobil1 is $50 for 10 qts


is it really a hard decision ?
Not for a 325. Mobil 1 is the only sensible option.

If I had an M3 I wouldn't use anything other than Redline.

Mobil 1 (regular Mobil 1) is barely a true synthetic. Redline, on the other hand, has, as far as I'm aware, the highest quality synthetic basestock you can purchase.

95% of people here (myself in included) will probably be able to get their engine (just the engine) to a million miles using Mobil 1 0w40 at 7.5k-10k changes.

Keeping coolant in the cooling system is probably the more important concern, though, in these cars.
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Old 11-25-2015, 01:30 PM   #12
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325 is people too friend, and worth it in my opinion. Hell I only change the oil once a year anyway. Redline FTW
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Old 11-25-2015, 01:46 PM   #13
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We don't even have a dealer in MN that carries redline. Mobil1 for me.
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Old 11-25-2015, 01:57 PM   #14
lingon300k
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325 is people too friend, and worth it in my opinion. Hell I only change the oil once a year anyway. Redline FTW
This, in my opinion, is an equally sensible argument. If you change your oil once or twice a year--like everyone else who cares enough to change their oil--it's worth spending an extra $30-$40 to put the best possible oil in the engine. I personally believe in over-maintaining things right up to the point of preventatively replacing parts, which is where I draw the line. If I didn't have another car, that line would get crossed as well. I think cutting BMW recommended maintenance in half, with 50k intervals for BS "lifetime" fluids is a sensible maintenance plan.

For me it's probably going to come down to a decision between 5k changes with locally available synthetic, or 10k changes with Redline. An oil analysis or two will help with that decision.

This reminds me of the argument I've had with multiple people about regular vs premium gasoline. So many people are under the impression that premium gasoline is a gimmick and don't seem to understand anything about compression, octane, resistance to detonation without spark, etc*. The price, overall, is negligible, and if the car requires it, the car requires it. My father, for example, who also happens to be an engineer, seems to believe that you never need to put high octane gasoline in any car, ever, and that the cheapest oil available is the best thing to use and should be changed every year or two, regardless of mileage. (He's not a mechanical engineer, but an engineer nonetheless)

I'll go ahead and call this my exit point, because this thread could conceivably go on for another 75 pages.

*There are people on the other side of this argument as well, who think that their Camry needs premium gasoline and Redline oil.

Last edited by lingon300k; 11-25-2015 at 01:57 PM.
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Old 11-25-2015, 02:12 PM   #15
hitbyastick
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Rotella T6 Synthetic is my go-to in a pinch, cheap at the Wally
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Old 11-25-2015, 04:19 PM   #16
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You can get Redline from Amazon for $48/gallon delivered with prime
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Old 11-25-2015, 08:15 PM   #17
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I like Motul 8100 xcess a lot. It's the one i've used in my car since I got it. It's about 50$ on fcp euro.
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Old 11-25-2015, 08:24 PM   #18
daves325in2012
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Derek...Isn't $48/gal = to roughly $100 for 8 quarts..

I think that was fairly accurate of wasp..
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Old 11-25-2015, 08:31 PM   #19
wildirish317
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Redline MTL and be done with it. You'll need 2 quarts as the capacity is about 1.5 quarts. The differential uses 75W-90 lube. It takes EXACTLY a quart. My diff runs Redline 75W-90 for non-limited slip diffs.

When changing the tranny and/or the diff lubes ALWAYS remove the fill plug first! Why? If you drain the tranny/diff and can't get the full plug out you'll have an inop car!!!
Without reading through all of the posts, I'll point out this one. However, I use Redline D4 ATF in my manual transmission. Just changed it after running it for almost 50,000 miles (20,000 overdue, I know) and I love it. Redline states that MTL might be too "slick" for the syncros, and recommends ATF for manuals. I've had good luck with it.
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Old 11-26-2015, 05:37 AM   #20
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also used d4 in my gm step
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