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  1. #21
    Craig in Canada
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    Re: Craig, I just want to thank you...

    No problem. I'm glad you've had a positive experience.

    If you want it to be even quieter, try:

    - Rotella T6 5W40 (full syn)
    - Castrol Syntec 0W30 (the German stuff)
    - Redline 0W40 (if cost is no object for the sake of quiet - the HTHS is crazy high for the weight)

    I switched away from M1 0W40 in my M52 because it made a racket like a threshing machine compared to a lot of other oils. The wear analysis of the used oil was great, though, so the M1 0W40 did a great job protecting things. I just like the smoother, quieter operation of other choices available to me (which are also giving excellent wear analysis)

    Some people experience "Mobil1 noise" (it's all over the Internet) and others don't. I don't think the M62 series, for instance, exhibits it. The noise difference between M1 0W40 and GC in my M52 is dramatic but it isn't clear from the specs why.

    As a generalization (doesn't apply to "M1 noise") - higher HTHS tends to make engines smooth and quiet. If the engines aren't designed for higher HTHS it'll feel "thick" though. A lot of Honda owners have tried German Castrol based on reputation and found it was delightfully smooth and quiet but their fuel economy suffered and they felt a loss in power. I find that, within limits, my M52 fuel economy and power increases as I head into the 40s with high HTHS.


  2. #22
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    +1 - always great information!

    William
    Richardson, Texas
    2010 Honda Accord EX, 4-cyl, auto-tranny (her car)
    2000 BMW 540i Auto, TiSilver, Sport/Prem Package (my car)

    Retired/sold:
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    2005 BMW 330i Auto, Premium Package
    2002 M3 Coupe with SMG
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  3. #23
    BG
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    Older cars? - good advice

    Thank you for the hints. The 320i has the M10 engine with K-jetronic injection, 149000 miles. It still cruises the interstate at 80 mph with no trouble at all, despite its "meager" 105 hp. Piston slap: no. Oil consumption: yes, maybe a quart per 1000 miles. The spark plugs foul with time and I have to clean them occasionally. I only drive this car about 3000 miles per year, so I change the oil annually. I just installed 20W-50 Castrol, but next time will follow your suggestions and use the Rotella T 15W40.

  4. #24
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    Re: Older cars? - good advice

    Pardon me not googling, but can I assume that K-jetronic is mechanical fuel injection? I would expect a decent chance of you seeing some fuel dilution of the oil in that case from improper metering. Some oils are better at handling fuel dilution than others - in general HDEOs are pretty good.

    Do you know where your consumption is from? Rings? Valve seats? CCV/PCV? Oil shearing? Oil flashing? External leaks? Just the way things were in the early 80s? :)

    Depending on what's going on there may be some things you can do to improve the situation. Fouled plugs may indicate a super-rich condition or lots of oil in the combustion chamber. Anything in your owner's circle about leaning things out or tuning the fuel injection in any way?

  5. #25
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    Re: DAMN!

    Hi!
    I've always used M1 0w-40, but now my engine is burning 1quart/750miles ( I have 189k miles on M54 engine ). I was thinking to switch to M1 10W-40 high mileage, but my mechanic is advising to use M1 5w-30 first. I know that M1 5w-30 does not meet BMW's specs because is a "thinner" 5w-30 and would like to know your impressions/experiences with M1 10w-40 high mileage. Isn't it too thick for cold NY winters? I live in CT, not far at all from you.
    Thank you and happy Thanksgiving!
    Dan

  6. #26
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    Re: DAMN!

    Hi!
    I've always used M1 0w-40, but now my engine is burning 1quart/750miles ( I have 189k miles on M54 engine ). I was thinking to switch to M1 10W-40 high mileage, but my mechanic is advising to use M1 5w-30 first. I know that M1 5w-30 does not meet BMW's specs because is a "thinner" 5w-30 and would like to know your impressions/experiences with M1 10w-40 high mileage. Isn't too thick for cold NY winters? I live in CT, not far at all from you.
    Thank you and happy Thanksgiving!
    Dan

  7. #27
    Craig in Canada
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    Re: DAMN!

    You should note that I've read a lot of accounts from people who have M54s which burn oil. I've also read some discussions where they determined that it was valve seals or valve guides - going to 10W40 isn't going to solve that problem.

    Furthermore, M1 10W40 isn't going to be much thicker at operating temperature than M1 0W40. They're both 40 weights @100C. M1 0W40 is known to be somewhat prone to shearing mid-interval but if you run extended drains it thickens up again. (I have oil analysis records showing that after 6500km in my 528 GC 0W30 stays thicker than M1 0W40). In some cases this shearing may allow for some consumption.

    M1 0W40 PDS:
    http://www.mobil.com/USA-English/Lub...l_1_0W-40.aspx

    M1 HM 10W40 PDS:

    http://www.mobil.com/USA-English/Lub...leage_Oil.aspx

    If you look at the 40C/100C viscosities, the 0W40 is 75/13.5 and the 10W40 is 98/14.71. By comparison M1 15W50 is 125/18.

    The M1 HM series has a lot of fans, it's pretty solid. You could also try something that's a little different to see if it helps your consumption. If I were in your position I'd try Rotella T6 5W40 (viscosities 87/14.2) and see if it changes anything (particularly coming into winter). There's also a M1 5W40 TDT that a lot of peopole like.

    If you think that you could have some ring deposits or something contributing to consumption, you could try an Auto-RX treatment next summer: two bottles of ARX in Rotella T 15W40 for 5k mi followed by another run of Rotella T for 5k mi as a "rinse". If it's valve guides or CCV, Auto-RX won't do anything for you.

    The Rotella T6 5W40 PDS:
    http://www-static.shell.com/static/c...cants/1-52.pdf

    M1 TDT 5W40 PDS:
    http://www.mobil.com/USA-English/Lub...uck_5W-40.aspx

  8. #28
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    Craig has a lot more REAL experience

    I go by the sound, feel and temp of the engine. Craig went the professional way.

    Craig where do u send ur oil out to?

    I love M1 15/50 and ive used it year round in my e30 and my old s10 blazer. The blazer used to lose oil pressure when the oil got up to temp, but when i used M1 15/50 the oil pressure stayed steady on the hottest of days. And still flowed great in the middle of dead winter.

    I just drained the 15/50 out of the 540 too scared to run it in dead winter with the vanos and all.





    My summer Bimmer lol



    Andreas
    Queens NY
    BMWCCA# 186796
    86 325es (wrecked by careless driver)
    87 325 (project for life)
    00 540is 6spd (daily driver)

  9. #29
    Craig in Canada
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    Re: Craig has a lot more REAL experience

    I love the kidney grills on the pink bike... I should see if I can rig that up for my girl. They'd be E39 grills though.

    I also use sound and feel as part of things, absolutely. Certain things are determined by specs and tests, and the rest by observation.

    For instance, M1 0W40 did a great job protecting my M52 according to tests and it has all the right properties for the job. On the other hand I came to realize that I had multiple engines suffering from "M1 noise". A lot of people experience it, a lot of people don't (and defend Mobil with ridiculous levels of passion). When I stopped running M1 in something like 2006 I noticed a dramatic decrease in all kinds of engine noise as soon as I started the car after the oil change. Suddenly I could hear belts, the alternator, and a ticky lifter sound went from being in the background to being front and center. I found that pretty much anything except M1 was quiet so I never went back to M1 even though testing said it was doing great. GC is far quieter and also tests great and has all the right specs. With other choices available, why go back to the racket?

    Also, I've found that whenever I'm running a 40 weight my engine is smoother as I sweep the rev range. When I'm running GC I can feel little resonant vibrations at various revs, and a little buzz continuously >3500rpm mostly in the steering wheel. It's subtle, but there, and noticeable when you switch back from a 40. On Rotella T 15W40 (dino) or Esso XD-3 15W40 (dino) all I get is intake and exhaust melodies and that's it. Although GC is better than M1, as soon as I finish up the last of the family "stock" of GC this winter I will be switching to Rotella T6 5W40. I've been running dino 15W40 for the last couple of summers for a couple of reasons. We eliminated virtually all of my dad's M62TU VANOS rattle with a double-dose of Auto-RX and running Rotella T all summer.

    Running high RPM with M1 0W40 felt like the car was saying "Ugh, can we upshift already?". Running high RPM with GC is "OK, if you say so, but this isn't as fun as it used to be...". Running high RPM with the 40s has been "Let's go faster! Listen to that sound! We're half a Ferrari!".

    For labs I've used Blackstone, Wear Check and I've heard Toromont runs a high quality, well-priced service local to me.


  10. #30
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    Just got back w/24 quarts of M1 0W-40 & 5GTX 5W-30






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  11. #31
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    I just bought Rotella T6 5W40 yesterday at WM

    It was about $22/gallon compared to the $24-26/gallon for the Mobil 1. But it was not the price, but the noise on my 540's engine while running the M1 (0W40 Euro formula), plus I don't like the valve racket it makes in the morning when first starts - after a few weeks of using the M1 it just feels/sounds as if it were a little bit too thin. Purely subjective, I know, but I am following your advice and will change to the Rotella T6 5W40 this weekend and see/hear how it feels after the change.

    William
    Richardson, Texas
    2010 Honda Accord EX, 4-cyl, auto-tranny (her car)
    2000 BMW 540i Auto, TiSilver, Sport/Prem Package (my car)

    Retired/sold:
    2006 Dodge Charger Daytona - Top Banana
    2005 BMW 330i Auto, Premium Package
    2002 M3 Coupe with SMG
    1995 525i auto
    1991 535i 5-speed manual

  12. #32
    pimpsled
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    Re: Craig, I just want to thank you...

    Thanks Craig for the info. Also got 3 cases this morning. Not a huge rush of people for the oil at Pep Boys at 6AM.

  13. #33
    Craig in Canada
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    Re: I just bought Rotella T6 5W40 yesterday at WM

    If you're suffering from "M1 noise" (as I've described elsewhere in the thread) it has nothing to do with viscosity. It's something to do with the basestock. I observed it in various engines running M1 5W30, 0W40 and 15W50 (old goopey thick red cap). Don't confuse M1 noise with HLA clatter from incorrect viscosity.

    In terms of other racket, it could be VANOS rattle. Straight up viscosity may, or may not, help with VANOS rattle. Over this past summer we ran a course of Auto-RX through my dad's 540: 1/ two bottles of ARX in Rotella T 15W40 dino for 5k mi 2/ Rotella T for 5k mi. We're just coming to the end of the "rinse" phase and there's almost no VANOS rattle to be heard. Only at low idle in certain conditions do you hear a little knock. It used to be a very prominent sound even when the Rotella T first went in - meaning it wasn't strictly viscosity related.

    Good luck. I've heard great things about T6. If I lived in Texas, I'd just run Rotella T 15W40 dino @ 5k intervals but there's nothing wrong with T6.


  14. #34
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    Thanks - I will report back after a few weeks

    William
    Richardson, Texas
    2010 Honda Accord EX, 4-cyl, auto-tranny (her car)
    2000 BMW 540i Auto, TiSilver, Sport/Prem Package (my car)

    Retired/sold:
    2006 Dodge Charger Daytona - Top Banana
    2005 BMW 330i Auto, Premium Package
    2002 M3 Coupe with SMG
    1995 525i auto
    1991 535i 5-speed manual

  15. #35
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    Re: Craig has a lot more REAL experience

    I'm just wondering if Rotella T6 synthetic is appropriate in our engines? I just checked the jug and its ACEA-E9 rated. No mention of ACEA A3, etc. I know the stuff is good, I use it in my diesels. But not specifically rated for BMW?

    I'd like to use it, would simplify oil purchases....

    RT

  16. #36
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    Re: Craig has a lot more REAL experience

    Yep, just don't try to run it for the full service indicator interval.

    I'll be starting to use T6 in the spring (next oil change) on my 528 and my dad's 540.


  17. #37
    Vin M
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    +1...Also got 24 quarts this morning.


  18. #38
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    Damn i messed up again.

    i didnt know the sale was only till 11am, they had plenty stocked but no more sale :(

    Im gonna pick up the cordless Goodyear impact wrench though. Ive used my friends gun and it works really good.

    Andreas
    Queens NY
    BMWCCA# 186796
    86 325es (wrecked by careless driver)
    87 325 (project for life)
    00 540is 6spd (daily driver)

  19. #39
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    planning on switching to 0/40



    Andreas
    Queens NY
    BMWCCA# 186796
    86 325es (wrecked by careless driver)
    87 325 (project for life)
    00 540is 6spd (daily driver)

  20. #40
    CGL
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    Re: Please enlighten me, RU saying 5W30 is too thin(m

    However, the BMW "Service and Warranty Information" booklet that came with my US 2000 5401a specifically said the following 3 oils are approved by BMW:

    1. BMW High Performance 5W-40 Synthetic Oil (PN 07 51 0 002 545)
    2. Mobil 1 5W-30
    3. Mobil 1 5W-40

    If the M1 5W-30 is not suitable for their engines, why was BMW officially endorsed it ?


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