Oil change with aux oil cooler -, should the oil in the cooler be drained out too? or not worry about it? |
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Oil change with aux oil cooler -, should the oil in the cooler be drained out too? or not worry about it? |
DRPHIL914 |
May 13 2021, 03:23 PM
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#1
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Dr. Phil Group: Members Posts: 5,808 Joined: 9-December 09 From: Bluffton, SC Member No.: 11,106 Region Association: South East States |
I have thought about this a few times and forget to ask if this matters, . do we just not worry about that extra quart or so that is in the cooler and cooler lines, OR option 2 drain it or 3. run it after changing it, long enought to open the thermostat that allows for the oil to circulate thru the cooler and run it for a while and then change it again?
seems we are only getting about 3/4 of the oil out and changed if i leave it in there- my motor is a stock 2.0 and the cooler was installed at Tangerine racing, it is small one that comes off an adaptor plate on the oil filter location. thanks for the input. Phil |
Superhawk996 |
May 14 2021, 05:09 AM
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#2
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914 Guru Group: Members Posts: 6,469 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
Doc,
You're over thinking it. Alternatives: 1) Don't worry about the oil in the lines. If you're changing it regularly at 3000 mile intervals, that oil isn't that dirty. 2) Change oil on a slope and/or crack fittings to drain all oil. Now you have a big slug of air in the lines and the cooler that eventually needs to be backfilled. That will result in a drop in oil pressure. Either delay of presure when you start the engine 1st time or when your thermostat opens. One way or another the pressure has to dip when that void is filled. Personally, I'd go #1. |
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