Engine oil Shell or OEM Subaru

Shell Engine oil

So I took his advice and did the Rotella T-4 and MMO in my 71 LeSabre 350. Added a little to the gas, too. I run 93 octane gas. Engine is stock and original, about 90k miles. It's running so smooth now. It was an immediate, noticeable difference.

Pros: running so smooth
Mileage: 144840 km
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Shell Engine oil
300cid
  • Engine noise:
Rating 5.0

Shell rotella t5 its valvetrain runs much smoother and quieter with a thicker diesel oil.

Pros: smoother and quieter valvetrain
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Shell Engine oil

I've used Rotella T6 in literally all of my bikes since 2017 because it is cheap and has JASO MA2, it is deisel oil.

Pros: cheap, has JASO MA2
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Shell Engine oil

I've been running rotella t6 4w40 in my 81 cb750c for the past 15 years. I also use it in every other bike I own or have serviced and my 4 wheeled vehicles.

Pros: long term use
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Shell Engine oil

I use Rotella T6 5w40 in all my vehiciles. It's a quality oil that works well for everything I own from mechanical turbo diesel to motorcycles to big blocks.

Pros: quality oil, works well
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