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  1. J

    01 BMW M5 - 114k on engine, ,6900 on M1 15w50

    Why would I prefer 5w50 over 15w50? It has alot more VII in it which reduces shear stability, does it not?
  2. J

    01 BMW M5 - 114k on engine, ,6900 on M1 15w50

    I love M1 15w50 so I guess I fit into it's cult personality. I've used it on the m5, in a 2008 subaru legacy GT and did a UOA on it (beautiful), and in a 99 porsche boxster. For engines harder on oils, or that prefer a bit more viscosity, I find it to be my favorite "9 month" oil. I don't want...
  3. J

    01 BMW M5 - 114k on engine, ,6900 on M1 15w50

    Factory recommended viscosity is 10w60 (there was a short time where they recommended 5w30 after a piston re-design, but BMW issued a TSB going back to 10w60). To that effect, they specifically recommend Castrol's 10w60. I find the premise that the car requires an oil produced in the late 90s...
  4. J

    01 BMW M5 - 114k on engine, ,6900 on M1 15w50

    Normal bought in Wal-mart 15w50 synthetic <img src="/forums/graemlins/smile.gif" alt="smile" title="smile" height="15" width="15" /> I'm not planning on extending much, though I feel safe in running it to 7500 miles. This engine is pretty stout, but it's also reallly reallllyyy expensive when...
  5. J

    01 BMW M5 - 114k on engine, ,6900 on M1 15w50

    I don't like M1 0w40 in this application, as I feel it doesn't leave enough film strength "margin of error" for the rod bearings after extended use. I.e. 5000 miles of VII breakdown + engine wear on the oil itself + 100 degree ambient temps + lugging the engine I love M1 0w40 overall - I've...
  6. J

    01 BMW M5 - 114k on engine, ,6900 on M1 15w50

    <img src="http://i980.photobucket.com/albums/ae281/joefrompa/01M5-UOA-114konengine-6900onoil-M115w507-Jan-2013_zps814b47ee.jpg" alt="" /> 2001 BMW m5, owned since March 2012 with 103k miles on it. Vehicle history is incomplete but had 5 owners before me and probably a hard-driven life, but...
  7. J

    UOA - 06 Civic SI - 13k on m1 0w40, 114k on eng

    I'll be buying an M5 in the next few months - I'll keep you updated. Are you a member of m5board.com?
  8. J

    UOA - 06 Civic SI - 13k on m1 0w40, 114k on eng

    Overkill - yeah, I've been reading the same thing. Regardless, I'm not a fan of 5w30 or 10w60 in the engine (unless racing, then 10w60 makes sense to me). I like the mid-range - 5w40, 10w40, 15w50.... Joe
  9. J

    UOA - 06 Civic SI - 13k on m1 0w40, 114k on eng

    You are thinking of the rings - and no, 5w30 still isn't fine to run (though plenty have run it fine for a long time). The rod bearing issue has only begun emerging on very high mileage models.
  10. J

    UOA - 06 Civic SI - 13k on m1 0w40, 114k on eng

    With tuning, there is no way I would run anything dropping into a 20 weight in my engine. And yours is very well tuned if you are producing 242whp. Look at my 2 10k runs with PP 5w30 (the last 2 runs that were ~10k miles in total). Even in my car, with all my highway driving, it sheared down to...
  11. J

    UOA - 06 Civic SI - 13k on m1 0w40, 114k on eng

    It's just one of those things man - for some people, they get consistently higher silicon numbers with a K&N than a more traditional, quality air filter. Now, that being said, this board is infamous for freaking out over something cause a 2ppm chronic difference when in practicality it's a...
  12. J

    UOA - 06 Civic SI - 13k on m1 0w40, 114k on eng

    And the thread goes dead silent as heads explode... <img src="/forums/graemlins/smile.gif" alt="smile" title="smile" height="15" width="15" />
  13. J

    UOA - 06 Civic SI - 13k on m1 0w40, 114k on eng

    Uh oh - here comes the REAL controversy... <img src="/forums/graemlins/smile.gif" alt="smile" title="smile" height="15" width="15" /> I've been running a drop-in K&N filter on EVERY analysis shown <img src="/forums/graemlins/smile.gif" alt="smile" title="smile" height="15" width="15" /> The...
  14. J

    UOA - 06 Civic SI - 13k on m1 0w40, 114k on eng

    Btw, yes, this was 0w40 API-SM - just checked my leftovers in the garage. I deliberately LIKE the M1 0w40 because within 2k miles it's a heavy 30 weight. I don't want a 10w40 which will maintain a solid 40 weight throughout the cycle. Hope that makes sense. ... Last thing - The M5 will likely...
  15. J

    UOA - 06 Civic SI - 13k on m1 0w40, 114k on eng

    Bluesubie - I'm pretty sure this is my pathway: Sell the Boxster for ~$8500. Use that money to buy the M5 (along with savings/possibly a modest loan). Ensure M5 is well sorted while keeping the civic SI. Once sorted, sell the SI for $6-7k (it'll have ~120-130k miles on it at that point). Use...
  16. J

    UOA - 06 Civic SI - 13k on m1 0w40, 114k on eng

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: hooligan24</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">Why would I tinker at this point?</div></div> "Thou shall not stop tinkering" Im...
  17. J

    UOA - 06 Civic SI - 13k on m1 0w40, 114k on eng

    Fcobra - I believe we have fairly different piston/ring designs. Correct me if I'm wrong. I tried to get oil consumption to decrease. I've used PP, RP, Amsoil SSO, valvoline, M1 0w40, and even supertech synthetic early on... None of it made much of a difference. Actually, I take that back, up...
  18. J

    UOA - 06 Civic SI - 13k on m1 0w40, 114k on eng

    I'm sorry maybe I wasn't clear - at this juncture, i consider the oil consumption to be a good thing, not something I want to "solve". <img src="/forums/graemlins/smile.gif" alt="smile" title="smile" height="15" width="15" />
  19. J

    UOA - 06 Civic SI - 13k on m1 0w40, 114k on eng

    Buster, I'm a believer in slightly thicker oils - especially with low friction piston designs such as this engine has. So I like the "lightweight" 40 weight for this car, which obviously shears to a 30 weight quickly. Leakyseals - I'm used a ton of oils. Those UOAs also reflect Amsoil SSO 0w30...
  20. J

    UOA - 06 Civic SI - 13k on m1 0w40, 114k on eng

    I've been dreaming about an e39 m5 for several years. I've finished my master's degree, my wife is 8 weeks pregnant, and i'm financially able. It's time to sell the coupes and get a proper family sedan <img src="/forums/graemlins/smile.gif" alt="smile" title="smile" height="15" width="15" />
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