It just occurred to me that I've never replaced any hoses on my 2004 na v70.
I have 370k miles.
Probably on borrowed time, no?
Should I change the radiator and heater hoses.
Original Volvo or other suggestions.
What's the service on coil packs, mine are original.
I've been told the reason my coil packs have last this long is b/c I've changed plugs according to the maintenance schedule. Should I carry a spare one?
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I'm stuck on Volvo and Volvo's stuck on me....when it comes to FWD I always listen to the "Oracle of Minnesota'

In particular, check the large bottom coolant hose as that one can deteriorate from oil, coolant etc. leaking on it. Following Klaus' logic, when my 95 855 needed a radiator I replaced the bottom hose at that time.

More recently, I replaced the larger of the two coolant tank hoses as it was beginning to look a little "shaky". On an 850 it is easy to keep an eye on the top coolant hose and heater hoses so I monitor them closely knowing that I will need to replace them eventually.

Volvo hoses seem to be extremely long lasting compared to other cars so I wouldn't consider using anything else...

Coolant hoses are a time thing, not mileage. The large top hose will become too soft when cold, compared to new. My rule of thumb: replace the hoses when the radiator needs replacing. My 1995 still has original hoses, but when I get around to flushing the coolant it will get new hoses.


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Keeping it running is better than buying new

"...Should I carry a spare one?..."

Might not be a bad idea. But rather than purchasing an after market unit from the local chain auto parts store I would prefer to grab a couple of OE Volvo coils from a pick-n-pull yard. You could swap them into the car at the next plug change just to make sure you aren't hauling a dead coil around in your trunk. Often times an "old" Volvo part ends up being better than a "new" aftermarket part.

As for what brand of hoses to purchase, I look at it this way - the original Volvo hoses, along with the coils, have lasted nearly 400,000 miles. I'd say that's a testimony as to their quality. But then it's easy for me to sit here and help you spend YOUR money.