Proven fuel system cleaners and engine performance restoration treatments delivering measurable emissions reductions, fuel savings, and extended component life across rail and fleet operations.
Diesel engine efficiency depends on three critical factors working in concert. When any one is compromised — through carbon deposits, fouled injectors or worn ring seats — power output declines and emissions rise. Standard scheduled maintenance cannot remove these deposits.
The Worldwide Fuel Charter — signed by all major engine manufacturers — confirms that injector fouling reduces fuel flow, increases noise, smoke, and emissions.
01
Airflow
Good air-flow through clean intake and combustion systems is essential for complete, efficient combustion.
02
Fuel Atomisation
Injectors fire up to 50 times per second. Deposits on pintles degrade the spray pattern with every single cycle.
03
Compression
Good compression from clean, freely-moving piston rings. Carbon in ring grooves destroys sealing integrity.
Savings Calculator
Download our savings calculator to see how much you could be saving on your fleet after cleaning with BG Products
BG's two core products address both emission sources simultaneously, restoring the three pillars of diesel efficiency without strip-down or downtime.
BG Premium 245
Diesel Fuel System Cleaner
Dissolves deposits from injector pintles, restoring correct spray atomisation. Cleaner combustion produces fewer unburned hydrocarbons and lower NOx. Added directly to the fuel tank during normal operation — no strip-down required.
BG EPR
Engine Performance Restoration
Removes carbon and soot deposits from piston ring seats, restoring compression and sealing integrity. Directly targets the root cause of excessive combustion temperatures that drive elevated NOx and particulate output.
Independently Verified
TRIAL RESULTS ACROSS RAIL & ROAD FLEETS
Every result below was measured using calibrated gas analysers before and after treatment. No hardware changes. No new vehicles. The same engines — working better.
QRTC / RSSB — UK Rail
Vanguard Shunter 01547
NOx (before)82 ppm
NOx (6 months after)50 ppm ↓39%
CO2 reduction↓50%
Black smokeEliminated
Network Rail — York
Doosan X160 Rail Welding Unit
Hydrocarbons7 → 0 ppm (−100%)
NOx↓12.5%
CO2↓18.2%
Results held4 months later
Northern Plains Railroad — USA
EMD SD40-2 Locomotive #5558
Opacity (smoke) avg↓70% all notches
Full load improvementSignificant
DMVW Railroad — USA
EMD GP35 Locomotive #6347
Opacity at Notch 878.1% → 55.0%
Horsepower restored1,838 → 2,106 HP
HP gain+14.6%
Injector life3yr → 6yr (doubled)
Halliburton Fleet — WY, USA
Caterpillar C11 Cement Trucks
NOx reduction↓50% avg
Opacity reduction↓81.8% avg
Fuel saving↓8.6% avg
SAB Miller Delivery Fleet
Road Transport Fleet (6-Month Follow-up)
Opacity (PM)↓68%
NOx↓28.65%
Hydrocarbons↓86.88%
Fuel saving↓13.2%
Scania HGV — Road Haulage
Scania Truck (6,449 km post-treatment)
NOx260 → 145 ppm (↓44%)
CO22.6 → 1.1 (halved)
Fuel at idle↓40%
SW Ambulance Service
Mercedes Ambulance
NOx↓75%
Hydrocarbons−100% (eliminated)
CO↓70%
CO2↓62%
Morrisons HGV Fleet — UK
Bridgwater Distribution Fleet (5-Month Trial)
Untreated control↓4.2% economy
BG-treated vehicles+2.2% economy
Comparative saving+6.4% vs control
Return on Investment
THE NUMBERS SPEAK FOR THEMSELVES
Based on a fleet consuming 38,500,000 litres of diesel per annum at a conservative 4% fuel saving. Emissions savings calculated on the same basis per annum.
NOx
147,840 kg/yr
CO2
24,024,000 kg/yr
PM
1,755 kg/yr
HC
12,012 kg/yr
CO
21,252 kg/yr
£847,000
Estimated Annual Fuel Cost Saving
38.5M
Litres fuel per annum
4%
Conservative fuel saving used
£0.55
Fuel cost per litre
2×
Injector life extended (DMVW Railroad)
Excludes additional maintenance savings from extended injector and component life, reduced DPF regeneration frequency, and avoided unplanned downtime.
