S70 thermostat

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Michael - 10 Mar 2007 15:06 GMT

On a 1998 S70, when you replace the thermostat, I see there is a rubber
gasket that fits around the thermostat itself, but is that it?

Is there another gasket for the housing...(don't see one).

Do you just brush off the corrosion and replace the aluminum housing....or
do you use some blue rtv?

THANKS

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Glenn - 10 Mar 2007 21:54 GMT

> On a 1998 S70, when you replace the thermostat, I see there is a rubber
> gasket that fits around the thermostat itself, but is that it?
[quoted text clipped - 5 lines]
>
> THANKS

That's it just very gently clean the surfaces

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Michael - 11 Mar 2007 14:41 GMT

Glenn, (or anyone)

I drained the cooling system really well on my 98 S70....(bad radiator, alot
of "chocolate shake" in there).

It's really running clear now.

I disconnected the bottom radiator hose and fed the water through the
thermostat opening for a few hours just letting it run on the driveway.

Like I say ALOT of gunk passed through.

So, now I'm going to replace all the (4) hoses and eventually replace the
radiator. The overflow tank looks brand new from cleaning.

I didn't open the engine drain cock when I flushed but from what I've read
it doesn't make much difference?
You don't get much out of there?

Is that true?....will I be ok?

Thanks !

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Michael - 11 Mar 2007 17:36 GMT

Also ran plenty of water through the main fill inlet which connects to the
overflow tank.

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