Mobil 1 with no issues change every 3k, rarely top off in between changes
Only use motul. XCess gen 2 5w40 for the ‘04 wrx. I get oil samples sent to the lab on the wrx and it has consistently been improving results since switching to motul. At first they were worried about the motor and now they say it looks clean as a whistle
Always used Motul 8100 xclean 5w30 every 3k miles on the dot.
Mobile one is best in every single case, unfortunately its the most expensive for this reason.
I’ve heard valvoline is good too. I use Mobil 1
I personally lean towards affordability, so I run Mobil 1 0w-40 because the local parts stores run sales for $35-40 pretty regularly.
I had a tiny bit blue smoke and thought it was sticky rings.
Ran mobil1 5/30 and it's gone.
Anything from Motul Go for full synthetic and according to the grade and spec recommended by your instruction manual.
The Motul oil you’re looking at is pretty similar to any old big box oil, but it costs a ton.
I tried Mobil 1 in a Vortec 5.7. That engine did not use oil using Castrol or even Walmart dino oil. IT did use a quart at 1000 miles using 15-40 maybe it was 15-50 Mobil 1.
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