7.3 Oil Capacity - Ford Powerstroke Diesel Forum
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Old 05-19-2012, 07:44 PM
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7.3 Oil Capacity

Ive read on a few different forums some people using 14 quarts with their oil changes in the 7.3 and some using 15. My manual says to use 15 quarts (including what you put in the new filter prior to installing it). I did my last oil change and installed a little under 15 quarts, including what I put in the new filter before twisting it on. With just under 15 quarts, the oil level reads about 1 inch above the cross marks on the dipstick. I gave the truck plenty of time (about 15 minutes) to drain the old oil before putting the drain plug back on. My question is to all of you guys using 15, like the manual says, does your dipstick level read high? I know that some oil stays in the HPOP, but from what ive read online that oil is not figured into the 15 quart refill recommendation.

Last edited by E-Man; 05-19-2012 at 07:50 PM.
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Old 05-19-2012, 07:50 PM
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did you start it let it run for a min shut down then check it? (COMMON MISTAKE!)
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Old 05-19-2012, 07:53 PM
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15 quarts is the amount of oil to put in.

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Old 05-19-2012, 07:57 PM
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15qts is the amount with a filter chance.
The HPOP reservoir and HPO railsaren't figured into the change capacity.
If you don't start it and let it circulate, the figure will read high.
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Old 05-19-2012, 08:18 PM
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Quote:
Originally Posted by jesilvas View Post
15qts is the amount with a filter chance.
The HPOP reservoir and HPO railsaren't figured into the change capacity.
If you don't start it and let it circulate, the figure will read high.
I last changed it a few months ago. It's been started and run many times since the change and still reads a little high. I just checked my old Amsoil bottles out in the shed and I definetely only put about 14.75 quarts in. Thats with using a stock Motorcraft filter. Like I said, I let the truck sit for quite a while before re-installing the drain plug...and when I did there was no old oil dripping out at all. So you guys that run 15 quarts, your dipstick doesn't read a little high?

When I bought the truck, the previous owner had written "14 QUARTS" with a grease pen on the fan shroud...im guessing the dipstick must've read high for him too when he put 15 in.

Last edited by E-Man; 05-19-2012 at 08:28 PM.
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Old 05-19-2012, 08:31 PM
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Nope. Not high on my stick . . .
What year motor is in it and what is the trucks build date?
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Old 05-19-2012, 08:34 PM
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hmm i wonder what happend to your extra qt, they must have took something out of the oil system...i just wonder what
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Old 05-19-2012, 08:44 PM
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16 quarts in the entire engine (including HPOP). 1.5 quarts for the filter & 13.5 in the pan..........
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Old 05-19-2012, 08:44 PM
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Quote:
Originally Posted by jesilvas View Post
Nope. Not high on my stick . . .
What year motor is in it and what is the trucks build date?
Stock original motor with about 87k miles on it. Doesn't leak or burn any fluids. I believe its a April or May 2001 build date. Maybe im letting it sit for too long after shutting it off before checking it (still fairly new to diesels). Ill usually let it sit for 10-15 minutes after shut down to check it. How long are you guys waiting?

Last edited by E-Man; 05-19-2012 at 08:59 PM.
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Old 05-20-2012, 06:01 AM
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That should be fine.
The reason I ask is because OBS 7.3 motors take 14 qts.
You SURE it's the original motor?
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