Alpha Megamoly Premium 15W40

(8 customer reviews)

Our top of the line, ultra-performance, petroleum-based diesel engine oil. Fortified with our exclusive Alpha Performance Booster, designed to reduce friction, wear, noise, and operating temperatures. This is the best diesel engine oil in terms of protection and fuel efficiency in your heavy- and light-duty equipment. It will reduce wear rates by as much as 30% to 50%. Through proven used oil analysis, typical oil change intervals range between 800–1000 hours. This product is our #1 Seller for a reason.

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Alpha Megamoly Premium 15W40

Alpha Megamoly Premium 15W40 is our top of the line, ultra performance, diesel engine oil. It is ideal for use in both on-road and off-road diesel engines. It is fortified with our exclusive Alpha Performance Booster, designed to reduce friction, wear, noise and operating temperatures. The Alpha Performance Booster is a synthetic lubricity additive that greatly improves lubricity and reduces wear rates by as much as 30% to 50% (proven through used oil analysis).

Alpha Megamoly Premium 15W40 uses only synthetic calcium sulfonate detergents, the only type of detergent that prevents deposits from forming on the crown land and the top of pistons. The use of synthetic calcium sulfonate is one of several reasons users experience very long drain intervals when using this product.

Alpha Megamoly Premium 15W40 is an excellent choice for all operating conditions ranging from general duty to severe operating conditions. It is formulated with the additive Moly, a proven friction modifier, which provides an excellent lubricant film that further prevents metal-to-metal contact and frictional wear.

Product Benefits:

  • Meets and exceeds CK-4, CJ-4, CI-4+ specifications
  • 12.5 TBN promotes long drain intervals and reduced wear rates
  • Prevents harmful deposits and varnish build up
  • Enables lower operating temperatures
  • Ensures increased fuel efficiency
  • Greatly extends engine life
  • Engineered for modern low sulfur diesel fuel and engines equipped with diesel particulate filters (DFP) and diesel exhaust fluid (DEF)


Alpha Megamoly Premium 15W40 meets and exceeds the following manufacturers’ specifications and requirements:

  • API Service Classifications CK-4, CJ-4
  • ACEA E7-16 and E9-16
  • Caterpillar ECF-3
  • Cummins CES 20081 and 20086
  • Detroit Diesel Power Guard Oil Specifications DDC93K218 and DDC93K222
  • Deutz DQC III-10 LA
  • Ford WSS-M2C171-E and WSS-M2C171-F1
  • JASO DH-2
  • Mack EO-O Premium Plus and EOS4.5
  • MAN 3275 and 3575
  • MB 228.3 and 228.31
  • MTU Category Type 2 and 2.1
  • Renault VI RLD-3 and RLD-4
  • Scania LDF-2
  • Volvo VDS 4 and VDS 4.5
  • Navistar
  • John Deere
  • CHN (Case-New Holland)


Typical Technical Properties:

SAE Grade 15W40
Total Base Number (D4739) 13.0
Sulfated Ash wt. % 1.0
Viscosity at 100℃ cSt (ASTM 445) 15.1
Viscosity at 40℃ cSt (ASTM 445) 112.1
Viscosity Index (ASTM 2270) 147
CCS Viscosity @-20℃, cp (ASTM 5293) 4529
Pour Point ℃(℉) (ASTM D97) -40(-40)
High Temperature/High Shear Viscosity cP (ASTM D5481) 4.4
NOACK Volatility, % weight loss (g/100g) (ASTM 5800) 5.2

8 reviews for Alpha Megamoly Premium 15W40

  1. OmarZ

    I use this in my fleet of tractor trailers, oil always lasts at least 50,000 miles.

  2. JamesMiller

    Highly recommend this product. Engine runs smoother and with more power.

  3. CedarViewRepair

    As a long time customer of Alphas, I could not be happier with this product.

  4. DannyN

    A+ engine oil

  5. CountrysideTractor

    As a mechanic for tractors, I can say this oil is a difference maker. The inside components of the engine are clean as clean can be when using this oil.

  6. MatthewR

    This oil works better than any “synthetic” oil I’ve ever used. The synthetic additives in this make all the difference. Make sure you know what your paying for!

  7. donovanm

    Once they explained to me what additives are important in a diesel oil, I knew I had to try their oil. I am so glad that I did!!!

  8. jvigione

    I used to thing oil is oil until someone at Alpha actually explained it to me. I use this product in my Caterpillers and dump trucks and I havent had any breakdowns or issues in 5+ years.

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