Engine oil Shell or PENNZOIL

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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PENNZOIL Engine oil
M_Shulman
  • Exhaust smoke:
Rating 5.0

I ran Pennzoil XLF in all my two strokes for years with no probs. Good price and readily available at Wal-Mart, Amazon, etc. Quality oil and lower smoke than many.

Pros: Good price, readily available
Cons: lower smoke
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PENNZOIL Engine oil
Man0Tech22
  • Engine noise:
Rating 5.0

I use Pennzoil ultra platinum and my car runs great I change it every 5K. I use mazda oem oil filters since they don’t have the anti drain back valve.

Pros: car runs great
Mileage: 5000 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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