BMW 750i complete loss of coolant and oil with recurring engine pressure issues from turbos on BMW 750i

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some BMW 750i owners report experiencing a complete loss of coolant and oil, which can lead to serious engine issues if not addressed promptly. These owners often find that coolant leaks can stem from failed components such as the water pump, radiator, expansion tank, or damaged hoses, emphasizing the importance of early detection and repair to avoid costly engine damage. Additionally, many report issues with oil loss due to oil filter gasket leaks, which can result in a completely seized engine if not resolved quickly. Furthermore, recurring engine pressure issues from the turbos may be linked to problems with turbocharger coolant lines or other components, making proper maintenance and monitoring of the turbo system crucial. It is recommended that owners consult a qualified mechanic or BMW specialist for accurate diagnosis and timely resolution of these complex issues.

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