What brand of antifreeze is used in the BMW 5 Series?
2 Answers
There is no mandatory regulation on the brand of antifreeze, as long as the same brand is used. Different brands of antifreeze may have varying production formulas, and mixing them could lead to chemical reactions between additives, rendering them ineffective. How to choose antifreeze: The basic indicators of antifreeze are the freezing point and boiling point. Market-available antifreeze comes in specifications such as -15°C, -25°C, -30°C, and -40°C freezing points. Generally, it is advisable to choose one with a freezing point at least 10°C lower than the lowest temperature in your region. How to determine if antifreeze is low: Observe the antifreeze warning light on the dashboard. If it lights up, it may indicate low antifreeze levels, though it could also be due to excessively high engine temperature. Check the antifreeze reservoir. If the fluid level is below the minimum mark (MIN), do not continue driving and add antifreeze promptly. Inspect the water level markings on the antifreeze tank. The normal antifreeze level should be between the maximum and minimum marks. If it is below the minimum mark, it indicates a shortage of antifreeze.
I've been running an auto repair shop for over a decade, and BMW 5 Series owners frequently come in for coolant changes. The OEM coolant is a blue liquid with BMW's own branding, but it's actually manufactured by BASF in Germany under the model name G48. This coolant is specifically designed for BMW's high-temperature engines, with a boiling point exceeding 110°C. The most stocked item in my shop is this OEM version, though some owners bring Shell coolant that meets the G48 standard for replacement. The key is to look for the BMW LL-12 certification mark on the packaging, as mixing with off-brand products can corrode aluminum radiators. Last week, an F10-chassis 5 Series that used regular coolant ended up with corroded water pump connections that leaked. I recommend checking the freezing point and pH value every two years, and owners in southern regions can appropriately extend the replacement interval.
