Oil Cooler necessary? - Defender Source
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  #1  
Old May 11th, 2010, 06:04 PM
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Bill Adams
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Oil Cooler necessary?

I can understand the need for an oil cooler for the automatic transmission, even the transfer case. I still can't figure out why there is an engine oil cooling circuit on the V8. It seems dumb to me. Really, why would the oil ever get hotter than the engine, if that is indeed the presupposition for having this thing?
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  #2  
Old May 11th, 2010, 06:16 PM
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87-88 RRCs and 03-04 discos did not have one.
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Old May 12th, 2010, 09:33 AM
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It probably depends alot on the way you use the truck, and the climate you live in. Land Rover spent the money to include it, so the engineers must have seen value in it, otherwise they wouldn't have added cost to the production to include it.

That being said, if you use the truck strictly as a pavement pounder, particularly in a temperate climate, I doubt there would be much benefit, or harm to simply eliminating it. But if you tow frequently, particularly in hilly terrain, or hot climates I would think it would add benefit, as it would for a heavily loaded expedition vehicle moving at slow speeds, over rough terrain (particularly, again, in a hot climate).

Of course I've always wondered about going one better and adding an independent oil cooler, removed from the radiator, and using a thermostatically controlled sandwich plate, but I can't seem to help trying to think of ways of making things better when you replace them, instead of just replacing them..

My two cents, for whatever they are worth...
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Old May 12th, 2010, 09:36 AM
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Remove it, run good quality synthetic oil and forget it was ever there - just my opinion.
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  #5  
Old May 12th, 2010, 11:36 AM
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I removed mine on the NAS 90 due to the overwheling downside and limited benefit. I always ran mobil 1. On the tdi's I have left them intact since I have used these trucks for heavy towing and the cooler lines are on the opposite side of the engine from the exhaust manifold.
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