Adding motor coolant (generally known as antifreeze) for your 2011 BMW 335i is very straightforward. Engine coolant / antifreeze circulates via your engine to keep it interesting in the summer but will not likely freeze while in the Wintertime. Be sure to check your engine when it is actually chilly https://spoiler-car-types40594.goabroadblog.com/26946064/an-unbiased-view-of-types-of-coolant-for-bmw-335i