How not to get hosed
Keep in mind, (especially on those V8’s), that BMW’s have a lot of hoses. You may need to replace 10-15 vs. only 4 on an American made V8. This is something to remember when it’s time to start replacing those, and the time will come. There is usually some brownish discoloration on the hoses, but keep in mind that they actually deteriorate from the inside. So, sometimes, you may be looking for cracks or striations and not see much on the exterior of the hose. We rarely see hoses look brittle on a car that is still being driven, (they have already popped off or blown apart by then)! However, they can feel spongy, depending on the age of the hose and where it’s located in the system.
If your coolant mixture is old or not the correct composition, your hoses will be breaking down prematurely. Your shop should be using specific testing methods to determine if it’s time for your system to be flushed.
So, for the good health of your hoses, be sure that you are following the recommendations for the cooling system flush and getting your coolant checked properly. Following proper maintenance procedures will extend the useful life of your car’s components. But, then you knew that already!