oil line question

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Steve - 16 Nov 2005 04:52 GMT

OK, I am lazy I admit it.
I brought the 94 940 turbo into the garage for an oil change and looked
under it.

Looks like a typical car, however right at the oil filter mounting plate
there are oil lines that go to (I guess) either a oil cooler or the turbo
(or both?)

looking on the us passanger side toward the front of the car some one put a
simple rubber hose on the oil filter plate boss where I suppose a barb
nipple holds it on with a hose clamp.

This cheap set up filled me with considerable fear of long trips where the
oil gets real hot swells the hose and ...god I dont even want to think of
what might happen.

Is a hose of SUITABLE quality whats suposta be there, or is there some steel
pipe ting, or what?

Thanks

--Steve

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Mike F - 16 Nov 2005 14:28 GMT

> OK, I am lazy I admit it.
> I brought the 94 940 turbo into the garage for an oil change and looked
[quoted text clipped - 18 lines]
>
> --Steve

Those hoses carry coolant not oil. If you're worried about them, buy
new ones, and new clamps too.

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Mike F.
Thornhill (near Toronto), Ont.

Replace tt with t (twice!) and remove parentheses to email me directly.
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James Sweet - 16 Nov 2005 19:29 GMT

>>OK, I am lazy I admit it.
>>I brought the 94 940 turbo into the garage for an oil change and looked
[quoted text clipped - 21 lines]
> Those hoses carry coolant not oil. If you're worried about them, buy
> new ones, and new clamps too.

Coolant? Isn't he talking about the oil cooler lines that connect to the
oil filter mount? The turbo water lines only connect to the turbo and
they go to the radiator hoses.

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User - 17 Nov 2005 00:59 GMT

> > Those hoses carry coolant not oil. If you're worried about them, buy
> > new ones, and new clamps too.
>
> Coolant? Isn't he talking about the oil cooler lines that connect to the
> oil filter mount? The turbo water lines only connect to the turbo and
> they go to the radiator hoses.

It's caled an oil cooler, but it's really a cooler/warmer. It brings the
oil up to temperature quicker in cold weather and helps cool it down in
hot weather. If you're noy careful when changing the oil you can cock it
so it will chafe a hole and puke all the coolant.

Bob

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The goal when driving is to miss the maximum number of objects.

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Steve - 17 Nov 2005 01:05 GMT

Those *are* the lines in question.

I was relieved for a 1/2 day...sigh.
What do I to to correct this?

> >>OK, I am lazy I admit it.
> >>I brought the 94 940 turbo into the garage for an oil change and looked
[quoted text clipped - 25 lines]
> oil filter mount? The turbo water lines only connect to the turbo and
> they go to the radiator hoses.

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James Sweet - 17 Nov 2005 02:18 GMT

> Those *are* the lines in question.
>
> I was relieved for a 1/2 day...sigh.
> What do I to to correct this?

If they've been altered from original setup you could replace them with
new hoses, if you just don't like the original setup (rubber hoses with
crimped metal fittings on the end) you could get some braided stainless
covered lines from a race shop.

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Mike F - 17 Nov 2005 16:13 GMT

> Coolant? Isn't he talking about the oil cooler lines that connect to the
> oil filter mount? The turbo water lines only connect to the turbo and
> they go to the radiator hoses.

Originally with Volvo turbos (your car for example) there were hoses
that carried oil from a thermostatic device at the base of the oil
filter to an air cooled heat exchanger. With the intercooler and
radiator redesign in the early '90s, the thing at the base of the filter
became a liquid to liquid heat exchanger that has coolant in the hoses.
With the 850, they sent the oil (so oil in hoses again) to a liquid to
liquid heat exchanger in one of the rad tanks similar to the
transmission cooler. Then in 1999 this heat exchanger was mounted on
the side of the engine (so no oil hoses again), which is where it has
been on every turbo since, as far as I know.

As Bob mentions in another post, these liquid to liquid heat exchangers
also heat up the oil when it's cooler than the coolant temperature,
aiding warmup.

Signature

Mike F.
Thornhill (near Toronto), Ont.

Replace tt with t (twice!) and remove parentheses to email me directly.
(But I check the newsgroup more often than this email address.)

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