40 grade is a range. 12.5cst to 16.5cst at 100c. So your 10W40 might be thinner than some 5W40.i was told 10w40 can slow oil consumption, i was wondering if it is ok to use it as opposed to 5w40
How does your valvetronic survives cold starts when oil is 20 times thicker? Engines can run thick oils, they cant run super thin oils.and using this thicker oil wont harm the n62? i mean we are talking about a more modern engine with Vanos and Valvetronic.
15W is tested at -20c. That is cold cranking simulation. That means temperature of oil is -20c not ambient temperature.what temp can 15w50 Mobil1 be run at like lowest temp
Probably mechanical issue and oils sometimes hide issue until it gets really bad.my 750i seems to like 15w50 especially at high rpm the engine feels smother when going through rpm band but has the tick tick going on while foot on break at a stop light and this happened with 10w40 but going away afterwards if I let off break or put it into park also low idle like 400-500 rom someone told me the break booster is my issue as if I feel like I'm trying to press a concrete wall also. it is a strange tick i never get it in park at idle and when i rev it in park only when drive tik tik tik at 500 and sometimes 400 rpm and the car feels like it wants to sprint like the car torques up and in the back and squats like how runners do when they run the mile
In N62 5W40 was go to LL01 oil when it was developed. Any engine can run any grade. There is no such thing as too thick (there is too thin).5w50 vs 15w50 what is the difference, was thinking about running it because my manual says i can use 5w40
15W50 and 5W50 are similar (same) in thickness! Both are 50 grade! Difference is in cold pumpability.ok so 15w50 shouldn't cause any issues with valvetronic or vanos, I'm just considering 5w50 because it seems more like a oil that would be similar to what this car takes but thicker when warm but if it shears faster than 15w50 then there isn't any point because 5w50 is expensive.