ok let me explain myself a little more. I ran castrol full syntec and it ran hotter and louder with it then castrol 10w-30 with the lucas. I dont really care bout them bob the oil guy whatever my jeep is quiter and burns less with lucas and castrol together. soooo thats why i run it. maybe its not right or anyones cup of tea but it makes me happy so thats why i do it.
1993 Cherokee 4dr SE green, 4.0, Auto, HP30, 8.25, 3" lift 31" Goodyear Duratracs, Custom made front recovery bumper, Kenwood radio, 12" alpine type e subwoofer,alpine amplifier, Smittybilt xrc8 winch, tuff stuff portable winch receiver custom modified. 2002 Jeep Wrangler Sport 4.0, 5 speed, Dana 30 front, Dana 44 trac loc rear, Stock