What kind of coolant should you used for a BMW 325i?

For a BMW 325i, it is recommended to use a coolant that meets BMW's specifications, specifically the BMW Longlife coolant, which is typically a 50/50 mixture of ethylene glycol and deionized water. Look for coolants that are blue or green in color, as these are often formulated for compatibility with BMW engines. Always check the owner's manual for specific recommendations and ensure that the coolant is suitable for your model year.