Engine oil Shell or OEM BMW

I am using Shell Helix Ultra 5w40, fully synthetic for my Lancer (2006), change it at around 7000 KMs. No complaints, my travel includes short & long distance, very happy & satisfied.

Why spend more when you can buy Shell Helix Ultra FS 5w40 from Lotus's, Giant or Aeon Big for half the price or less compared bought in petrol stations.

I run mobil1 but my local small engine place that installs and services Generac, Kohler and Briggs swears by Rotella straight 30 weight.

I have a baleno woth 130k mileage and I have been using shell 10w 40 and the performance and fuel avg is great

I have a BMW e36 and it is standard practice to run an extra quart of oil at the track to prevent oil starvation and lifter tick. I have been doing it for years with dozens of track days along with many other people I know with no issues.

I use rotella 15w-40, high zinc content but my engine also has 230k miles

I use one oil - shell rotella. It goes in my XRL my 4.0 Jeep and my 7.3IDI diesel ????

I always used gn4 but switched to rotella t6 15w40 cheaper, full synthetic. it can handle the heat alittle better and I like the shift quality over gn4. Walmart has it for cheap

I think factory recommendation is Rotella but honestly you can go with any high quality oil. I have used Rotella, Castrol, and Valvoline synthetics in my 500 and I honestly don’t think it matters.

I switched to Rotella T6 (5w-40 Full Synth) after running Penzoil, Chevron, Castrol, Mobil, regular non-high mileage 10w-30 dinos in that order over 4000 miles. Worst of this bunch was Mobil and Chevron, the HLA tick was unbearable, even right after the oil change.