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| Joined: | 03-22-2005 |
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I just did this last week in connection with switching to 10W-40 oil from 20W-50.
I undid the four bolts holding the oil cooler to the car....then simply twisted it up and dumped the oil out the hoses, after taking the oil filter off of course. A lot poured out; I'm sure I got most if not all of it.
I will tell you, it took me over an hour to get the four tiny bolts back in. What a pain!
Judson suggested that the oil cooler be refilled with fresh oil after draining. I must confess, I didn't do this, so it took a while longer than usual to register oil pressure upon start-up, but still less than 30 seconds at idle speed. (Am I subconciously trying to finish off my old engine, so I'll "have" to get Judson to build me my dream engine?) I just didn't want to undo the hoses at the cooler; a while back I had problems with them leaking. Next time I'll undo one of the hoses and fill the cooler, though, and dare the hose to leak!
I'm pretty sure there's not a thermostat controlling oil flow to the cooler.
I hope this is helpful.