How many additional quarts of oil do you need?, External oil cooler question. Options

[Craigers17]

So this is probably a stupid question, but I'm assuming that if you choose to run an external oil cooler, you have to add at least another quart of oil due to the additional volume in the lines and cooler coils.

I'm also guessing that the additional volume varies depending upon the cooler location. So if a stock 2.0 - 4 takes roughly 3.5-4 quarts, how much additional oil is required? Let's assume a rear mounted unit.

Or...is it as simple as fill up the cooler and lines, install, and then fill as normal until it matches the dipstick fill line?

Any advice/ridicule is welcome. Thanks.

[SirAndy]

How many additional quarts of oil do you need?, External oil cooler question.

There's no one right answer for that, every install of a remote cooler i have seen has been different.

Mine takes about 16 quarts total to fill up nicely.
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[tomeric914]

Mine takes about 16 quarts total to fill up nicely.

HOLY CRAP Andy! Just how big is your cooler and tank?

I have a 12" x 12" Setrab cooler that lays flat up front and a Patrick tank behind me. Anything more than 10-11 quarts in it and it starts filling the burp tank when running hard on the track. So it's more of a try and see thing depending on how you run your car.

Andy is running a 3.6 and I'm running a 3.0, both dry sumps.

For the OP, I'd fill the engine to the dipstick line, take it for a short drive, park it and let it cool down, then check the level and add oil as needed.