A Real Solution to Engine Blow-by

Engine blow-by is due in a large degree to the progressive accumulation of deposits throughout several parts of engines. Piston ring grooves, cylinder walls, valves, diesel injectors, diesel particulate filters, turbochargers and exhaust gas recirculation valves are typical places where deposit build up occurs. One of the more visible, early signs of deteriorating performance and efficiency is dirtier engine oil – a direct result of increased oil soot levels. It’s a direct indicator that excessive deposits have formed and are adversly affecting the normal operation of an engine.

Elevated soot level is the main culprit in limiting the oil service period. It’s also known to increase engine wear and shorten service life. Taking corrective action to physically remove these deposits will immediately restore operating performance and efficiency, while reducing wear rates to target longer engine life.

Engine Blow-by – does it need  a rebuild?

Engine blow-by is the term used to describe loss of cylinder compression as it leaks past the piston rings into the crankcase.Engine blowby coming from an engine breather

Blow-by is a direct cause of diesel smoke, oil consumption, loss of compression, and high levels of soot in the lubricating oil.

So, it’s not surprising that it’s a common trigger point for a complete (and expensive) engine overhaul. For a heavy truck engine, this cost could be around $50,000 including downtime, or for a mine haul truck engine it could mean costs of around $300,000 – $400,000 for repairs plus downtime!

Blow-by is usually regarded as an indicator of wear. However, the truth is that in approximately 80% of cases, blow-by is a symptom of piston ring fouling due to carbon accumulation in the piston ring groove, which prevents the ring from forming an effective seal to contain the compression pressure and combustion gases.

Engine blow-by can initially start due to unstable or light-load operating conditions, excessive idling, over-extended service periods, problems with emission control equipment or other reasons.

The longer blow-by continues, the more deposits develop around piston rings, valve gear, emission control  equipment, turbochargers and more. Operating performance starts to decline, fuel consumption increases, and eventually catastrophic engine failure can occur. There is generally nothing in recommended maintenance that addresses these deposits , but there is a large window of opportunity to correct this condition before wear and breakdown becomes a serious issue.

The Solution to Engine Blow-by

Introducing corrective maintenance into the preventative maintenance schedule extends component life and reduces unplanned maintenance costs, whilst optimizing whole-of-life production performance and efficiency.

Carbon is the main cause of piston ring breakage, and it is easily prevented.

Pro Maintenance Additives, in partnership with Cost Effective Maintenance (Australia), specializes in corrective and preventative maintenance. With over 30 years experience in heavy road transport and the mining industry, we have a strong focus on reducing engine blow-by and restoring lost compression and oil control in diesel engines of all types.

As North America’s distributors of the products developed by Cost Effective Maintenance (Australia) , Pro Maintenance Additives supplies a very effective, easy to use, two-part package that directly addresses the root cause of blow-by.

piston with broken ring caused by carbon in ring groove

The first step safely dissolves, disperses and removes these problem deposits by using an extremely efficient detergent/dispersant type flushing oil concentrate to remove all contaminants from the engine crankcase at time of oil change.

The second step introduces a ‘decarbonizer‘ into the diesel fuel, which, during the combustion process, actively oxidizes (burns off) ‘top end’ hard carbon deposits exposed to the combustion flame. The process directly addresses the root cause of engine blow-by. Over time, it restores and maintains a clean top piston ring groove for ongoing compression control, as well as oxidizing hard-carbon cylinder glaze.

Turbochargers, diesel particulate filters and exhaust gas recirculation valves are common problem areas. Active decarbonizing from the combustion flame ensures long, trouble free service from these components.

The package has proven successful even in very high mileage/high hour engines and offers a low cost means of screening engines that may appear to warrant overhauling.

A low cost fix for many engines with blow-by

Up to 80% of these engines may have considerable service life remaining if they are mechanically sound. Blow-by levels will reduce significantly, allowing for an increase in the effective life of the engine.

Optimizing diesel engine life by this procedure has the potential to save owner/operators, small and large fleets, or any diesel engine operator – be it car, truck, boat, tractor, earthmover, stationary engine, etc., significant costs over the course of the ownership and operation of the diesel engine. Add to that the accompanying energy efficiency associated with improving engine operating conditions.

Does FTC Decarbonizer really work?  Find out here


FTC Decarbonizer, pro maintenance additives, cylinder glaze, deglaze cylinders, extend engine life, don't rebuild an engine, does FTC Decarbonizer really work Caterpillar 3508 (8000 hours): Bad blow-by, bad wear and major carbon buildup.

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Caterpillar 3508 (15,000 hours): Preventative maintenance can dramatically extend the life of equipment like this Caterpillar 3508 engine

Blowby Pack – Which size do I need?2021-01-25T12:18:58-07:00

Choose the most appropriate size Truckers Blowby Pack for your particular need. 5 size choices are available – Mini, Mini Plus, Small, Medium or Large Pack

Mini Pack contains:Mini Truckers Blowby Pack Option 1

  • 32oz FTC Decarbonizer
  • 8oz Flushing Oil Concentrate

This is usually enough to treat cars and light trucks, small tractors, stationary generators etc.
Sufficient for vehicles with up to 16 quarts (4 gallons/19 liters) oil capacity and achieving approximately 15 MPG (15L/100km) or better.

Mini Plus Pack contains:Truckers Blowby Mini Plus Pack Option 1

  • 64oz FTC Decarbonizer
  • 16oz Flushing Oil Concentrate

This is suitable for mid-size vehicles and machinery; light trucks, medium tractors and machinery, etc. with up to 32 quarts (8 gallons/38 liters) oil capacity and achieving approximately 15MPG (15L/100km).

Small Pack contains:Truckers Blowby Pack Small Option 1

  • 1 gallon FTC Decarbonizer
  • 32oz Flushing Oil Concentrate

This is usually enough to treat larger vehicles and machinery, medium to heavy trucks, large machinery etc. Sufficient for vehicles with over 64 quarts (16 gallons/76 liters) oil capacity and achieving less than approximately 15 MPG (15L/100km).

Medium Pack contains:Truckers Blow-by Pack Medium Option 1

  • 2 gallons FTC Decarbonizer
  • 32oz Flushing Oil Concentrate

This pack suits long-haul, OTR type applications where large amounts of fuel are consumed over a short period of time.

Large Pack contains:Truckers Blowby Large Pack Option 1

  • 4 gallons FTC Decarbonizer
  • 64oz Flushing Oil Concentrate

This pack is suitable for small fleet operators with up to 3 or 4 trucks, or a combination of different types of machines, e.g. truck, excavator, dozer, crane etc.


(1 quart = 950ml, 1 liter = 33.8 ounces)


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