Engine oil Shell or MOTUL

using a heavier oil weight has been an old trick to help with oil consumption in Subarus for a long time now. I used to use Rotella 5w40 (before the reformulation) in my old 04 Baja Turbo and that particular oil was the best to keep the oil burning down.

Prolube is trash used motul and my top speed increased by almost 10 on all gears on my d250

I've been running 8100 Power 5w30 for the last two changes, every 3000 miles, and the aced the initial Blackstone test.

I've been using the x-clean EFE every 3k miles forever now an am tuned on full e85 now for 30k miles besides the factory valve tube seal leaking they fixed at 14k miles once but that's due to 23' errors. Now am thinking did I use the wrong one hahaha but am 30k miles deep in my use never anything oil that the efe in mine.

My regular since i think 2014 or so has been helix ultra 5w40 running in all my vehicles currently.

Using Motul (8100 5w-40 initially then 0W-40) since 8 years in my Honda City '09 and I replace engine oil myself every year. Engine is smooth and gives decent mileage. Never faced any issues

Upping your oil change intervals to 5000kms wouldn't be a bad idea. I use motul 5w40 and haven't had issues

I run 0w30 in my F82 M4 as that's what BMW and Shell recommend.

I used so many brands

- Motul : okay

Could be the oil and not any problem with the engine itself. In India, these engines come with Motul 7100 full synthetic oil. There have been some discussions on the 390Duke forums and on Reddit that the oil burning issue and high oil consumption is caused by using Motul 7100