Old diesel fuel versus low sulphur fuel in Antique and Classic Mack Trucks General Discussion Posted 8 hours ago About 10 years ago we had I recall E10 petrol fuel (gasoline) over here which had some bio additive, not sure, it was strongly promoted as the way to for our petrol motors. So I started using it in our Toyota Prado 4 litre V6. Some 6 months later motor would not start, the engine sounded like it was choking. I rang the service manager at our local Toyota yard. First question - what fuel are you using, I said E10. His reply was - never use it again, put in 10-20 litres of 98 fuel and a bottle of injector additive and try kicking over the engine without actually starting the motor 3-4 times and then try start it, let it run for 1/2 hour stationary. It fired up after 3 key turns, the motor was rough for about 30 minutes and slowly it began to settle down. The service manager said the E10 slowly builds up like a glue and blocks the injectors and fuel pump, just keep topping up with 98 and add 1 bottle of fuel additive/cleaner weekly for next 3 weeks to clean out the crap. And continue using 98 fuel, which I have and thereafter motor has run perfectly, and more power and better fuel range than 95 and 92. We have hydrogen mixing with the diesel fuel in our E6 - 350, runs like a Swiss watch and reduces emissions 75-80%, plus the increased torque, up to 25% and clean engine. We planned to add LPG, but rules and regs to hard and the Mack technical guys told me their experience during early 1980's in new Ultraliners LPG was causing burn't valves and pistons, hence they removed the LPG set ups. No problems with the hydrogen and cheap to buy or make distilled water. One litre of distilled water creates hydrogen for 1,000 klms.