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Old 12-27-2001, 10:31 AM   #1
schoemf
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Lightbulb Why do '99 & up foresters have engine oil cooler attachment?

Just curious.

I've heard of transmission coolers for towing, but not engine oil coolers. The suby has a water to oil cooler between the oil filter & engine block standard on '99 + models. I don't think the Impreza has this attachment.

Matt
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Old 12-27-2001, 11:32 AM   #2
ForesterPerformance
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Engine oil coolers were very common on American V8 cars in the past. Most radiators had two hard lines (oil in and oil out) that went to and from the engine with its own couple of rows inside the raditator core. Only the Forester Automatic has this factory oil cooler as standard. iSR offers the items on their web site (at least they did last time I checked) as a retro-fit for all Subarus other than the Forester Automatic. I guess they felt the Forester was going to be loaded heavier and used harder than the other cars in their lineup, and thus needed the additional cooling provided by the oil cooler...

Hope this helps...
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Old 10-18-2002, 01:17 AM   #3
tdxflex
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do you know the part number for the new thermometer housing and the replacement with hose attachment for the plug? i only have the filter coupler.
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Old 10-18-2002, 10:45 AM   #4
lark6
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I dunno but I'm glad to know it's there.

Seriously, I think what FP said is correct. If anyone was/is planning to tow with the Forester it'd most likely be the AT owners.

Ed
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Old 10-18-2002, 02:45 PM   #5
juice
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I heard the same thing and find it kind of puzzling that it's only on Foresters with the automatic.

In fact, the 2003 manual models can tow 2400 lbs, while autos can tow just 2000 lbs, so it should almost be the opposite!

Any how, a nice bonus to buyers of the automatics.

-juice

PS I tow with my 5 speed
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Old 10-18-2002, 04:36 PM   #6
Peaty
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It's the same oil cooler they use on the turbo models of yesteryear, the US WRX and the new H6 too. I installed one on my RS:

http://www.scoobymods.com/forums/sho...=&threadid=170

PN's there

PS: the lines that went in and out of a radiator were/are automatic tranny fluid coolers not motor oil coolers. I worked in a radiator shop when I was a kid taking them apart. An oil cooler was usually a separate small radiator oil to air type. Like the one on this little car here:


Last edited by Peaty; 10-18-2002 at 04:43 PM.
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Old 10-20-2002, 10:13 PM   #7
Subietonic
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Default Guess all the AT Subes run with hotter transmissions

IIRC, from 96 on, all AT Subes have the "AT Temp" warning light incorporated into the dash. You won't see that on the MT equipped units. As FP indicated, the Foresters were expected to see more SUV-esque use, you know back and forth to the mall and socker practice, etc... and the occasional, light-duty off-roading , so the AT would need more cooling capacity. I'm not sure but I think the WRX AT has the AT cooler on it too, just because of the load. Check Subaru Parts.Com and enter "transmission cooler" in the search box and it'll pop up the 2.5 cooler kit. It has everything you need for the conversion. I'm going to put one on my AT BD and BK wagon. If you've ever pulled a long, uphill climb with a heavy load on your AT, even during cooler weather, you'll probably see an occasional AT light. This should help to fix that.

BTW Peaty - was that a Factory Five Cobra Replica with the engine cooler?

Br, Dale
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Old 10-21-2002, 12:20 AM   #8
Peaty
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Manual WRX's have the oil cooler too. I've changed the oil on a local guys once. AFAIK all the subaru turbo's have one but I'm not positive about that.

Quote:
BTW Peaty - was that a Factory Five Cobra Replica with the engine cooler?
Actually that was the real deal. I was at an auto-x where the Cobra club attended. That was the only real one.





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Old 10-21-2002, 12:30 AM   #9
Peaty
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Here is a pic of the OEM cooler on our Outback VDC:



Same as the one I put on my RS:



Another nice thing about the oil cooler is the car warms up quicker too because the oil will warm the coolant at first and I get heat quicker in the winter time
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