Originally Posted By: d00df00d
Originally Posted By: Hummell
Hey, nice to have a fellow m3'er here. My car never operates at those temperatures. It's a vert, so it never sees any track time. I can, however, get 0-45 very quickly in the city
I haven't found too many cars who can hang with me from stoplight to stoplight LOL
That brings up a good question. Is it bad to have such a heavy duty oil, like the 10w-60, if you're never breaking down the viscosity? Seems like it might be counterproductive to have a high viscosity oil in your engine if you're just running up to the grocery store for a few Guinness.
I sincerely doubt it would be any worse or more counterproductive than using an E46 M3 for that kind of duty.
Castrol TWS 10w-60 is probably one of the best lubricants ever made. I wouldn't sweat the thought that it is too thick, especially since BMW validates its cars in pretty much the whole gamut of climates (i.e. including ones where oil temps would be fairly low).
Besides, short temps = fuel dilution = breakdown. With an oil like TWS, fuel dilution might actually be more likely to break it down than heat or mechanical shear from hard driving.
Things have changed SO MUCH since the E30 1988-1991 4-Cyl. M3 that Revs like a Honda! (though it is N0T a Honda)
I need to do some research on what Oil THAT M3 used, as well as the E36 M3 (S52.) Perhaps re-engineering BMW's Oil Recommendation can be achieved if we look at what oils the M3s used in Sequence!
I didnt have the M3 and i never took mine to the Track but i Did have Ireland Engineering parts in mine. Granted i did NOT have the E46 M3 you are talking about, but this thread makes me want to look into one.
The Ultimate Driving Machine.... And yes, i used 5W-50 in mine. Either Castrol Syntec, or Pennzoil "Whatever they called it in early 2000s" it was always on Clearance at RS Strauss Auto Stores.
This makes me give a nod to that grade for your app... as far as "Short-Tripping, why is 10W-60 Needed for that," Well it shouldnt make much difference as the Oil is still warming up, if it shears at full temp and engine does not Get to full temp, .... Worry about its behavior when it IS at Full Temp!
That M3 has Oil Temperature gauge does not it?
(Also, the unofficialbmw.com Board is great. Not sure if those are the individuals saying Horrible things will happen to your engine if you dont put 10W-60 in it, but surely some of them also use 5W-50. If there is a way to monitor Pressures when Hot and Cold, this should shed some Insight.. NOACK Volatility no doubt is a great measurement of how well it will stand up to the High-Rev Hard application of a Track! The Oil Pan has Baffles to help it stay where it needs to be, i thought about getting it in my older one but i concluded i never pushed it -that- hard. How many Quarts in that Sump?)