Overview Reviews Product Description Fortified with ZINC Technology and bolstered with the Lucas Semi-Synthetic additive blend. Resists thinning out at high crank-case temperatures, Resists breakdown and contamination from exotic fuels such as nitro and methanol. Lucas Products Catalog Lucas Technical Data Information Product Videos Custom Field Product Reviews Write a Review Write a Review × Lucas Products 10W-40 Semi-Synthetic Racing Oil 4.73L Jug 10913 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *