Engine oil Shell or Motorex

PartReview Score

Rank #4 in ranking

944

325

351

4.5

Engine noise

4.3

Exhaust smoke

4.2

Warning light

4.3

Owners' choice:

PR Score

Ranking

Votes

Reviews

Average rating

Properties

Car

PartReview Score

Rank #27 in ranking

4.3

Engine noise

5.0

No data

Reviews

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Shell

Motorex

Shell › Engine oil

Traumadan 24 Sep 2023, 16:09

Rating 4.0

I use Rotella in old VW Bug. Seems to work well but i put very few miles on the car.

Pros: seems to work well

Vehicle: Volkswagen Beetle

Shell › Engine oil

sphinctersouffle 24 Sep 2023, 12:28

Rating 5.0

I run Rotella in my 49 flathead and in my 91 civic.

Vehicle: Honda Civic

Shell › Engine oil

carguy82j 24 Sep 2023, 05:32

Rating 5.0

As long as you don't have a catalytic converter on it Diesel oil with Zinc is the best

Pros: best with Zinc

Shell › Engine oil

BrambleVale3 24 Sep 2023, 01:29

Rating 5.0

I run Rotella in my E24 at the advice of people on the BMW forums.

Vehicle: BMW

Shell › Engine oil

JimmyRickyBobbyBilly 24 Sep 2023, 00:53

Engine noise:

Rating 5.0

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

Shell › Engine oil

amishdoinkskid 1 Sep 2023, 20:47

Rating 5.0

Using rotella t4 btw.

Shell › Engine oil

300cid 24 Aug 2023, 21:15

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

Shell › Engine oil

TheDeer01 24 Aug 2023, 01:37

Rating 5.0

I only use Rotella T6 in all 6 of the cars at my house.

Pros: used in multiple cars

Motorex › Engine oil

Vast_Republic_1776 15 Aug 2023, 13:40

Rating 5.0

Use an oil designed for a wet clutch, like this [motorex 15w50]

Pros: designed for wet clutch

Shell › Engine oil

gaso 29 Aug 2011, 15:31

Engine noise:

Rating 3.0

I've used a number of different oils in my XS400 over the past couple years, can't say I've noticed much of a difference other than when I used a 15W40 the engine was a lot noisier, going back to 20W50 and the engine quieted down a lot.

Pros: engine quieted down

Cons: engine was noisier