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Fluids and LubricantsMotor oil, transmission oil, radiator fluid, power steering fluid, blinker fluid... wait, there is no blinker fluid. Technical discussion and analysis of the different lubricants we use in our cars.
only use 10w-40 in the summer if youre burning oil or if you live in warm conditions. otherwise use 10w-30 yearround if youre burning oil or 5w-30 if youre not