We offer scientifically proven products , plus free technical service that will save you "serious" money, when you want to save fuel, save oil, stop engine smoke, decarbonise and save an engine re-build, or generally reduce your  vehicle, boat and machinery maintenance costs.

Please see our "How to.." sections below.

Diesel engines with poor performance may be far from worn out, but often these diesels are mechanically rebuilt unnecessarily .. frequently at a huge cost.  Our products improve performance whilst you drive, usually without the need for mechanical work.

We'll show you how to get the best longevity and high performance out of diesel engines, transmissions, diffs, final drives, power steering and hydraulics with very little cost ..we'll save you "serious" money and best of all you'll be delighted by the way your vehicles and machinery will run ...and run .. and run .. with improved efficiency.

Diesel engine internal cleanliness is paramount to engine longevity, maximum performance and fuel efficiency.

Poor diesel engine performance usually starts with a build-up of internal carbon deposits including cylinder glaze and engine oil sludge.  These deposits cause loss of power, high fuel and oil consumption, lots of exhaust smoke, hard starting, overheating, sticking piston rings and "blow-by", sticking valves, sticking lifters with noises and rattles, clogged EGRs, dirty fuel injectors and filthy black engine oil. 

Left for too long, poor performance caused by oil sludge or carbon deposits can escalate into a catastrophic engine failure!

Filthy black engine oil is due to carbon particles from poor fuel combustion and piston "blow-by".  These carbon particles (sludge) act as a grinding paste, causing rapid wear of moving parts.

Overheating under load is a common result from engine oil sludge, which often causes operators to unnecessarily spend lots of money on the cooling systems, when all that is required is to remove the oil sludge and prevent further sludge forming.

Please read all about how our products will save fuel, save oil, stop smoke, stop over-heating, deglaze, de-coke, clean fuel injectors, save a diesel engine re-build and add longevity to engines and machinery .. plus significantly reduce air pollution.

STOP wasting "serious" money by using our products.
200% money back guarantee... too good to be true?  Please see our user testimonials... we do not sell "snake oils"!

Stepwise Guide to using Neptune Products in diesel and petrol engines.

Save time & money whilst you drive, by decarbonising with  FTC catalyst in your fuel ..

  < this or this >  click images to enlarge

Get a clean start when changing diesel engine oil ..

  click image to enlarge before and after DeSLUDGE  FOC

How to STOP SMOKE  - for free and without a mechanical bill

How to DECARBONISE - for free and without a mechanical bill

How to REDUCE CO₂ - up to 16% from diesels

How to SAVE FUEL - up to 16% on diesel fuel

How to SAVE OIL  - up to 10 fold on oil changes, plus more

How to SAVE on MAINTENANCE - cut mechanical wear and servicing "downtime"

How to SAVE on ENGINE Re-BUILDS - make your 4x4, car, truck, boat or earth-mover last longer, go better, without a mechanical re-build

How to REMOVE RUST STAIN and "yellowing" - from boats, fiber glass gel coat, fabrics, sails and stainless steel fittings

"How to" E-Books - we have selected some e-books that you may find helpful

SURVEY on Diesel Engines .. please help us to prepare for you a time and money saving e-book giving you answers to what you ask for

"Care for the Environment" with scientifically proven products.

We are here to help you with information and supply you with scientifically proven products (backed by user testimonials) that will solve many engine and "power-train" problems .. plus reduce CO₂ emissions .. and at the same time save you money!

• your engine will deliver more Power & Economy

• you get genuine measurable benefits

• you get up to 16% less CO₂ pollution

• you get a FREE no obligation Help Desk

• you get a FREE on-line Engine Health Check

BOAT maintenance

Engines, hulls, sails, fittings

Save $$$$ on boats

VEHICLE maintenance

Engines, transmissions ..

Pass "Exhaust Smoke Tests"

VIEW products now .. 200% product guarantee

Go GREEN and get REAL SAVINGS.

Reduce CO₂ up to 16% right now!