where did you get the bung/boss? did you machine custom? I was thinking of getting hold of a M12 1.5 pitch aluminium nut and lathe turning one end for a round boss. Does it matter which aluminium alloy would comply with welding? How about 7075-T6? Obviously, it'll be much simpler to just drill and tap. The burning question is if the thickness of the oil pan material is sufficient to thread and withstand multiple torquing over time. Please advise.I did the same to mine. front had about .8 liters in it even with doing the tis procedure. the bung i used was more shallow but was welded on the the pan. I have a spare pan if anyone wanted to do and exchange service for a quick turn around.
Exactly ^^^Also just to clarify, viscosity is RESISTANCE to flow, so a higher viscosity oil (like a 10w60) flows SLOWER at lower temps. Therefore in areas of the engine with tight clearance, oil will have a harder time to flow to those areas compared to a LOWER viscosity oil like a 0w40. Higher viscosity oil is needed when the engine is running at or above the operating temperature which is 200+ degrees, this is where a lower viscosity oil may be too thin to provide sufficient lubrication or oil film thickness.
Please show where BMW approves 5w50. If you refer to the infamous 2013 or so TSB then that's a unique way of interpreting a poorly worded document. That TSB has long been superseded and newtis currently (and has always showed afaik) 10W60 as the only approved oil except 5w30 during break-in. And even then BMW imposed a RPM limitation while using 5w30. There's a fresh link to the current newtis oil table in the tech service sticky.5w50 is also a great option to consider and approved by BMW too.
I just start the engine and drive off, keep the revs under 3k then open it up after temp needle is near 210. I redline it a lot for 20k miles pre bearing job and 2500 miles post Lang Racing ACL bearings. Actually runs quieter when I redline ???. Staying with Redline 10W60 oil with 5k oil changes. Works great so far. Then change bearings again after 60k miles.. got another 57500 miles to go!So it stands to reason that it's better to idle the S85 engine till it reaches the optimal operational temp, regardless of using 10w60 or 0w40 oil, for the sake of RB longevity. Before putting any load on it, i.e. driving. Since I live in Santa Monica, CA, and 10 deg C (50 F) is the coldest it gets, the thicker 10w60 might be a better choice. BTW, this and other threads use acronyms which are not obvious, rather perplexing, to some like myself. For example, "clevite PDF on bearing wear", "BE bearing swap", "ACL bearings", "LL-04 matrix", "newtis oil table", etc. are terms not familiar to me. It'd be good to have a page on this Board where these are defined, and anybody using them make sure that they are. If not, comes up with a definition. Good idea? Thx