VGT Series vs Volvo Penta D-Series – How do we compare?



The VGT Series of marine engines is MarineDiesel’s flagship product. We originally aimed to make the lightest, most powerful, most reliable engine available in the market, and we succeeded where others have not.

So, how does the VGT Series compare to others?


MarineDiesel VGT: Mid-range

Volvo Penta D-Series: Expensive

*Price will vary greatly based on many factors, including import duties and dealer markups, but in general


Cost of Spares:

MarineDiesel VGT: Mid-range

Volvo Penta D-Series: Very Expensive

*Note: The Volvo Penta engines require special diagnostics tools for maintenance.



MarineDiesel VGT: Commercial / Military Medium to Heavy use

Volvo Penta D-Series: Recreational


Engine Block:

MarineDiesel VGT: V-8

Volvo Penta D-Series: Inline 6

*Inline cylinder arrangements tend to produce higher levels of vibration



MarineDiesel VGT: 500 kg

Volvo Penta D-6: 785 kg


Fuel Consumption:

MarineDiesel VGT: Max 220 g / kWh

Volvo Penta D-6: Max 225 g/kWh



vgt400 curves

MD VGT 400 Power and Torque Curves

vgt400 fuel

MD VGT400 Fuel Curve

d6400 curves

Volvo Penta D6-400 Power, Torque, and Fuel Curves








Ask Professor Diesel – 05/26/2014


This week’s question comes from John in the USA:


Professor Diesel:

I know that diesel engines can run on many types of fuel, what would happen if I try and use gasoline?



NEVER use gasoline in a diesel engine. At best, permanent damage will result. At worst, explosion or fire. Some diesel operators will add a little gasoline to diesel when preparing for storage over extended periods, as this can help in starting (MarineDiesel does not recommend this practice and it will void your warranty if you try it). NEVER more than 10% of total volume. The engine will run, but it is safest to drain the fuel and lines if gasoline has been added.


If you have a question for Professor Diesel that you would like answered, please fill in the form below:

[accua-form fid=”9″]

Maintenance Tip of the Week – Exhaust 05/26/2014


Maintenance Tip of the Week


Always check the exhaust system for dents and blockages. Restricted air flow in the exhaust system can trigger fault codes or seriously hamper performance.

Maintenance Tip of the Week – Gaskets 05/19/2014


Maintenance Tip of the Week


Always use gaskets of the proper thickness. Though it can be tempting to try and save money by using aftermarket parts, MarineDiesel uses gaskets of very specific thickness and quality to prevent leakage and give a long engine life.

Ask Professor Diesel 05/19/2014 –


This week’s question comes from Marten in the Netherlands:


Professor Diesel:

I have two VGT engines mounted in a boat that has been sitting in a shed for over one year. What should I do to prevent damage the next time I use the boat.



Diesel engines can incur a lot of damage when they sit idle for long periods of time. Ideally, you should start engines at minimum, once per month, or follow the extended storage procedure documented in your manual. Oil collects in the crankcase and becomes sludge, water condensation forms in fuel tanks and fuel lines, dust can get into various parts of the engine, and corrosion can start and get worse if the engine is not periodically inspected. Diesel fuel also quickly degrades over time. Assuming that the manual storage procedures were not followed, what should you do?


  1. Drain all fuel from the lines and tank, oil from the engine, and any fluid remaining in the water intakes.
  2. Inspect all hoses, connections, and fuel lines.
  3. Inspect the belts.
  4. If sludge has developed in the engine or crankcase, it must be removed.
  5. The fuel injectors must be checked and replaced if necessary.
  6. Change oil, fuel, and air filters.
  7. Clean the supercharger.
  8. Add water repellent to the fuel.
  9. Clean and flush the cooling system.
  10. Replace the impeller.
  11. Make certain that the batteries are fully charged and that connections are tight and corrosion free.
  12. Use the startup procedure described in your manual, just like with a new engine.


All of the above procedures must be done in accordance with the manual. If excessive sludge has built up, a rebuild or complete overhaul may be necessary.


If you would like to ask Professor Diesel a question, please fill in the form below:

[accua-form fid=”9″]


Use your senses



Your engine talks to you. It’s true, really. When you first step aboard and hit the start button, your engine is telling you how it is performing. The MarineDiesel panel is only verification of what your senses tell you.

Look: Look for leaks. Frequently. Drips or pools of oil, coolant, or fuel are never a good sign. Look for smoke, every time the engine starts. Look at your gauges for excessive fuel or oil consumption.

Listen: Listen for abnormal noises. Something doesn’t sound right? Then there is a problem. Sure, it may be minor, but minor problems have a way of becoming major problems. Knocking, pinging, humming, or simply just too loud.

Feel: Vibration. Though there is always a certain amount of vibration present, strong vibration or intermittent vibration can indicate a serious problem. Note that hull materiasl can amplify vibration significantly.

Smell: Odors of fuel, “burning”, smoke, or other unusual smells always are good indicators of problems.

Your senses are the first indicator of mechanical problems. Of course, on MarineDiesel electronic engines, we provide you with a sophisticated ECU and diagnostics package. All problems can be solved. We give you the tools to solve them quickly, and at least cost, if you only use your senses and do not ignore the warning signs.

The Great Australian Engine Rebate




For a limited time, MD Australia (Seapower), MarineDiesel’s distributor in Australia, will be offering MarineDiesel customers in Australia a cash rebate worth up to AU$6,000 on a pair of new MarineDiesel VGT series engines. Contact MD Australia today and find out more!

You can also find out more by visiting the Seapower stand at the Sanctuary Cove Boat Show!

MD Australia 

Fremantle WA Branch:
284 South Tce
South Fremantle, WA 6162
Phone: +61 8 9335 9777
Fax: +61 8 9335 3233
Coomera, QLD Branch:
Unit 17, 75 Waterways Rd
Coomera, QLD 4209
Phone: 1300 SEAPOWER
Fax:  +61 8 9335 3233

Visit Website



Maintenance Tip of the Week – Oil Filters 05/12/2014


Maintenance Tip of the Week


When changing oil filters, before mounting the filter, fill the oil filter completely with oil. This ensures that the engine is completely lubricated directly from startup.


Distributor Profile – MD Australia



MarineDiesel understands that our customers demand the highest level of after sale service in their operations. We only work with dealers and distributors who can provide high service levels on demand.

In Australia, we work with Seapower, Pty, Ltd.

Seapower Australia Pty Ltd is one of Australia’s marine engine industry leaders.

Established in 1987, Seapower Australia continues it’s success by promoting only the highest quality marine and industrial engines, engine spare parts and engine service so you have the satisfaction of purchasing the best products at the best price.

With a head office in Fremantle and a MAN sales office in Coomera QLD, we have listened to our customers needs and developed in a way that meets these requirements. Seapower Australia boasts an impressive portfolio that includes brands such as:





They offer full service on all MarineDiesel products and maintain a significant spare parts inventory in Australia. Their extensive dealer network throughout Australia offers nationwide service, same day or next day in most cases.

Visit their website for more information:


You can also see us in the Seapower stand at the upcoming Sanctuary Cove Boat Show, May 22 – 25, 2014

Sanctuary Cove Boat Show

Ask Professor Diesel 05/12/2014 – Kerosene

This week’s question comes from Mark in the USA:


Professor Diesel:

In my area, kerosene is considerably cheaper than diesel. Will my MarineDiesel engines run on kerosene without being damaged?


Kerosene is sometimes used to thin diesel to help prevent gelling in cold weather, but it also reduces the fuel’s lubricity as well.

Diesel engines are highly tolerant of different types of fuel formulations and can run on just about any oil-based fuel, but that doesn’t mean they should or that there is any benefit in doing so. Diesel engines are more or less indifferent to fuel types, but the emissions and injection controls on MD engines could possibly be damaged by using any fuel other than recommended in your model’s manual. Additionally, this means that you risk your warranty and performance levels would suffer, as the engine’s ECU is programmed at the factory based on fuel type, to optimize your performance. Since emissions levels produced by the engine are also based on a specific fuel use,  you could also find yourself violating local laws regarding air quality.

For illustration purposes only, the following is a  list of fuels that generally can be burned in a diesel engine (Though “can be burned” does NOT necessarily mean “should be burned”):

  • Diesel #1
  • Diesel #2
  • Diesel #4
  • ULSD (Ultra Low Sulfur Diesel)
  • Biodiesel (from B5 to B100)
  • Kerosene
  • Home heating oil
  • Civil jet fuel (Jet A-1, Jet A, Jet B)
  • Military jet fuel(JP-4,JP-5,JP-8)
  • SVO (Straight Vegetable OIL)