Obviously there are a lot of possible ways oil can be consumed. What do we think of this one?
The person who posted this claims it's from a conversation with BMW's no. 1 tech in the US about oil consumption in the S65B40 V8 and the S85B50 V10. Both engines have redlines over 8k RPM and specific outputs over 100 hp/L. The V8 was developed from the V10; they are very similar on the inside.
Assuming the post is genuine, I'm sure something was lost in translation, and the poster is clearly an amateur. Still, there seems to be enough here to evaluate. Can someone with real technical knowledge comment on whether this seems like a reasonable idea about how oil consumption might occur?
The person who posted this claims it's from a conversation with BMW's no. 1 tech in the US about oil consumption in the S65B40 V8 and the S85B50 V10. Both engines have redlines over 8k RPM and specific outputs over 100 hp/L. The V8 was developed from the V10; they are very similar on the inside.
Assuming the post is genuine, I'm sure something was lost in translation, and the poster is clearly an amateur. Still, there seems to be enough here to evaluate. Can someone with real technical knowledge comment on whether this seems like a reasonable idea about how oil consumption might occur?
Source: https://www.m3post.com/forums/showpost.php?p=23360100&postcount=1oil breaks down at certain temperatures and pressure inside our motors (any motor) and during the oil break down process, certain chemicals (toxic and non toxic) are released. This coats the inside of the piston housing with a kind of slick surface. The dirtier the oil, the slicker the surface becomes and the thicker the coating is on the housing.
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Our motors... are extremely high revving and if you don't drive the car at the limit the way it was intended and you just lope around town at 2,500 RPM the rings never seat properly due to the fact the oil never gets hot enough to evaporate in the housing, as a result the piston doesn't ride the inside of the housing the way it was intended to, instead it rides on the slick surface coating the housing left there by the oil as it breaks down. This causes oil leak down and seepage and is basically the reason for high oil consumption in the V8 and V10.
Our motors require intense, high revving usage for long periods of time such as on a race track or extended high speed driving in 1st, 2nd, and 3rd gear to heat the oil to the point of evaporation to prevent the coating of the housing.