Engine oil Shell or Motorex

Shell Engine oil

Can’t go wrong with Rotella T6. It’s marketed as a diesel engine oil, but gas engines love the stuff too. It’s just not great for catalytic converters, because it contains a high amount of anti-wear and anti-friction additives.

Pros: gas engines love it
Cons: bad for catalytic converters
Vehicle: BMW
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Motorex Engine oil

It works great, maybe a bit expensive. I've run used oil analysis and change it 3-4k miles based on aluminum wear. I don't see a reason to use something else.

Pros: works great
Cons: a bit expensive
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Shell Engine oil

Oil consumption was the biggest issue when running 5w30. Changed to a 5w40, 10w30, and then got recommend 15w40 and oil consumption stopped

Pros: stopped oil consumption
Vehicle: Subaru
Mileage: 363000 km
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Shell Engine oil

Shell helix ultra for mb’s spec, change when the car asks to. I’ve not had the car since it was new, so it’s pointless to spend extra money when it won’t make it last longer

Pros: mb’s spec
Cons: pointless to spend extra
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Shell Engine oil
DaRuski
  • Engine noise:
Rating 2.0

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.

Pros: engine cleaned up
Cons: HLA tick unbearable
Mileage: 4000 km
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