Omnicoach, Omnitruck, Omnivan. for use on Lucas Distributors 40499, 40776, 40821 & 41039. AUSTIN MORRIS 152 - J2. replaces:~ Lucas 400051, RA1 DRB101C. If your vehicle is not compatible with E10 fuel, you will still be able to use E5 by purchasing the ‘Super’ grade petrol from most filling stations.