My 93 850 has a slight leak around the water pipe on the rear of the engine. It is dripping coolant at the lower radiator hose connection. With 88,000 and being 12 years old, I am wondering if it would be good to order the new pipe as well as the hose? I am not sure how much corrosion is on the fitting. It may be too rough to re-seal on a new hose. Has anyone changed out the lower hose? How rough was the pipe, did a new hose seal OK.

If I change out the pipe, then I would I be looking at changing the water pump as well? Seems like this one would sweep all around the engine. New hose, new pipe, new water pump, new timing belt, new tensioner, new idler. New upper hose.

Also figuring on a new set of heater core hoses at the same time, seems like a good way to go. Question is How far??

Most hoses don't go because of milage, but rather by time and heat. 12 years is pretty young and 16 is pretty old. If you change one hose, replace all of them at the same time. That will also give you piece of mind.
You mentioned timing belt. Even with just 88K miles, its a good time to inspect it for age cracks. Don't replace the water pump unless it is leaky or noisy.

Klaus
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98 V70Rawd(101Kmi), 95 854T(85K mi), 88 245(165K mi)

I had a leak at the same place on my 95-850 at 120,000. I replaced both rad hoses and both heater hoses because they all felt soft compared to a new hose. I sprayed the clamps well with "Liquid Wrench" or similar rust penetrant. The clamps and hoses were not very hard to remove. Just take your time and wiggle them off gently. There was no sign of damage at any of the barbs including the metal one at the engine for the lower hose. I wiped them down and where there was any dirt I used a little 320 grit waterproof oxide paper to smooth them. There have been no problems since.

I got the hoses from EuroParts Direct. Follow previously posted hints if you replace the heater hoses. I wouldn't replace the metal piping unless you find it badly corroded.