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      02-27-2013, 03:58 PM   #4
Meeni
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Drives: BMW 330i 06
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Fuel additives that promise to do this or that or regrow severed limbs are snake oil (at best).

However, Techtron is effective at cleaning gumout in injectors and deposit inside cylinders. It should be used sparingly as needed, about once every two years or so, before doing an oil change (it is said to imbalance the additive package in oils).