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
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If choosing engine oil across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.
We compare engine oil across these categories:
In March 2026 on PartReview, engine oil Shell were overall better than MOTUL.
Engine oil Shell and MOTUL were equally popular according to data in March 2026.
By vote balance, engine oil Shell surpassed MOTUL:
By number of reviews, engine oil MOTUL surpassed Shell:
In March 2026, according to PartReview, engine oil Shell led more car-specific ratings than MOTUL:
Shell are chosen by owners of cars such as: Honda Jazz, Subaru Outback, Subaru Impreza WRX, Subaru Legacy, Volkswagen Scirocco, and others.
MOTUL are chosen by owners of cars such as: BMW X3, Renault Megane, Audi TT, and others.
If this comparison didn’t fully answer your question, there are many others on PartReview.
For example, comparisons of engine oil Shell with: Mobil, Castrol, LIQUI MOLY, AMSOIL, VALVOLINE, PENNZOIL, RED LINE, OEM Toyota, Mannol, RAVENOL.
Also available: comparisons of engine oil MOTUL with: Mobil, Castrol, LIQUI MOLY, AMSOIL, VALVOLINE, PENNZOIL, RED LINE, OEM Toyota, Mannol, RAVENOL.
You can also see who is better among other engine oil manufacturers: Mobil or Castrol, Mobil or LIQUI MOLY, Mobil or MOTUL, Mobil or Shell, LIQUI MOLY or Castrol.
