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Registered
Join Date: Jan 2009
Location: Marietta, Ga (Atlanta)
Posts: 2,970
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911s with a front oil cooler take 11-13 quarts of oil to be full. When you drain the tank and sump, you'll recover about 9qts. Leaving 2-4qts of old oil in the system that you can't drain! Last time I changed my oil (Brad Penn) I drained out the old oil then added 6-7qts fresh 15-40 I had on hand. I then ran the car 20 or so miles to mix it all up, then drained again before adding the new Brad Penn. Still couldn't get all the old oil out absolutley, but a least I knew it was pretty much all new oil!
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'80SC Widebody 3.6 transplant Anthracite "The Rocket"
Long gone but still miss them all:
'77 911 Targa, '72 BMW 3.0CS Coupe(finest car I ever had!)
'71 911T Coupe White, '70 911T Coupe Blue
'68 911 Coupe Orange, '68 911L Soft Window Targa
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