This post is regarding my 940, but posting here due to increased traffic.
About 10k miles ago I did a whole bunch of work including water pump,TB, rad hoses and heater hoses, heater valve, intake manofold gasket, oil sump etc...
I used a volvo brand water pump that I purchased from tascaparts.com
Doing some inspection yesterday I noticed a bit of blue discoloration around the weep hole in the water pump. There is no leakage from the donut seal and the paper seal is perfect too. There is not a lot of seepage but if you look closely enough its evident that there has been some blue coolant activity in / around the weep hole.
Is this a normal observation? Don't run my belts super tight...just tight enough to prevent squealing. Any thoughts? Should I switch to a lower pressure coolant reservoir cap?? I'm still using the original OE cap. This is the only thing I can think of.
Thanks,
Matt
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'90 245 292k, '93 945 305k
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