91 Octane
2011,e90,n55,335i,dv+,catless downpipe,
Chirping from rear main seal interment at idle, coming to stop and when revving down. Replaced with two new valve covers and problem hasn't been resolved, have excessive vacuum at oil fill cap and Chirping resolves when opened.
Marin base map VGCP 91 normal driving street highway
Normal driving, 1 or 2 pulls here and there but mostly normal driving on the street and toll road
Small pull first of day next frway
Just filled up 2 gal e rest 91 that morning