Well for starters, there are no additives in it according to the VOAs, so you're diluting the original oil's add pack pretty drastically considering you need a whole quart of the stuff. Second off: it's insanely thick, something like 10x thicker than a 30 weight oil without the VI adds to make it tolerable for cold starts.
A lot of parts places and quick lube shops have the little gears you can crank; one with Lucas additive and one with just oil. The goal is to show how well the Lucas sticks to the gears while turning, but you'll also notice that the Lucas gear takes more effort to turn. Now imagine that inside of an internal combustion engine and how much more force it takes.
Now maybe if you have a beater that is consuming or leaking oil so fast you can't top it off, it's worth it. Otherwise, nopenopenopeeee!
A lot of parts places and quick lube shops have the little gears you can crank; one with Lucas additive and one with just oil. The goal is to show how well the Lucas sticks to the gears while turning, but you'll also notice that the Lucas gear takes more effort to turn. Now imagine that inside of an internal combustion engine and how much more force it takes.
Now maybe if you have a beater that is consuming or leaking oil so fast you can't top it off, it's worth it. Otherwise, nopenopenopeeee!
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