Testdrive 4000 miles
At level 20% mustard seed oil in the dieselfuelmix no problems have occured during the 4000 testmiles.
Perhaps a small problem during a long test drive ( last weekend more than 1000 miles ) is the fuel itself. Mixture is made simply tanking 22 litres dieselfuel and adding 5 litres mso - now using a lot of 1990'ies.
