Quote:
Originally Posted by Ricky Bobby
I've been debating whether to do the water pump myself preventatively - I don't hear any bearing noise from it, but don't want to let it fail either - I was going to buy an extra gallon and mix it up so I can crack the radiator drain and "flush" the system with some of the fresh coolant once I button everything up.
Then that opens up the well should I do the radiator hoses, expansion tank, and thermostat while I'm in there, and I know these parts were replaced at least 6-8 years ago, the water pump is original -
I have a cold belt squeal on startup so I may be doing the idler and tensioner pulleys and belts anyway, might want to just do it all at once -
And then I'm sure I would have an OFHG leak about a year later LOL
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RB my original water pump went 260,000 miles before it ever leaked. I always stuck with BMW coolant though, with the addition of 12oz of Redline WaterWetter after any cooling system service was performed (Definitely helps deal with the Texas heat). I don't let any of the hoses go past 150,000 miles, but that only take me 6 years to do, so you're probably okay on those items for a little while longer. The tell-tale sign on those is the plastic connectors starting to look brown instead of black. I'd be most concerned with the age of your expansion tank.
You're 100% on with the OFHG situation - definitely easiest and most labor saving to do cooling system hoses, CCV and OFHG at the same time.
2002 X5 3.0 312,200 miles
2014 428i 22,800 miles
2004 325i sold at 123,600 miles
2001 325i sold at 66,000 miles