First let me say that seeing is believing. I own a 1979 K5 Blazer eith a sml blk 400 and live in Colorado.I did the average oil changes with 10w30 valvoline motor oil. I have seen Lucas Oil on tv and thought it was anoth...
First let me say that seeing is believing. I own a 1979 K5 Blazer eith a sml blk 400 and live in Colorado.I did the average oil changes with 10w30 valvoline motor oil. I have seen Lucas Oil on tv and thought it was anoth...