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During the course of April (2021), David Bewley (owner of leisure craft " Ava Grace ") and Julian Flanshaw (owner of Marine Survey boat "Precision 1"), both based at Hull Marina - having successfully resolved Diesel "bug" issues in the fuel on their respective boats, through application of CLEARWINNER D-BUG Diesel fuel biocide - started applying CLEARWINNER 31A-WD MARINE to their fuel tanks. This product is ostensibly designed to stabilise and protect Marine Diesel fuels, when kept in seasonal long term storage. However, with 31A-WD applied as an engine performance enhancer, David and Julian reported the following impressive results: 

 

Julian noticed an immediate, positive effect, where he was, for the first time, able to reduce the engine's revs by over 10% to achieve the same speed he applies on a daily basis, on Precision 1. David found a similar effect, with Ava Grace achieving an unheard of 4,000 rpm at one point, instead of a previous maximum of 3,500 rpm. 

 

Application of 31A-WD MARINE had a clear positive effect on engine performance on both craft; by virtue of reduced demand on engine power output, fuel consumption would then have been reduced. Doseage levels were approximated at 500 mls. 31A-WD to treat 1,200 - 1,500 litres of fuel. 

 

Technical data : "Ava Grace " runs on two Volvo Tamd 41A engines, producing 200 hp each. They are 30 years old and have 1350 hours on them.  

"Precision 1 " runs on two x 9 year old Iveco 450 hp engines.