Oil Capacity: OBS vs. NBS

**RadarRider** · #1 (**permalink**) 07-03-2009, 04:28 PM

I just finished up working on my instructor's '97 F-350. It needed a new oil pan & dipstick tube. When I got the oil pan, I measured all dimensions to make 100% sure it was the same size as the one that came out & it checked out OK. I also made sure the new dipstick tube was the same length & besides a really bad bend in the old one, they're both the same length. Now, when I put the oil in it today, I primed the oil filter & installed it. Then I put in 3gal of oil & the dipstick's reading almost to the full line in the operating range grid......

I haven't gotten to start the truck yet to build up oil press & let it warm up(because of rain), but whatever little the filter would need to fully prime & whatever amount of oil will fill the engine I know won't require another gallon. My NBS takes about 4gal. Do OBSs have less oil capacity than an NBS????

**ianstew** · #2 (**permalink**) 07-03-2009, 04:31 PM

i thought they were the same.....

psdmichael · #3 (**permalink**) 07-03-2009, 04:54 PM

They take the same amount of oil.

**Dave** · #4 (**permalink**) 07-03-2009, 04:57 PM

Yup both 15 quarts. IIRC there was an updated dipstick for the OBS. I could be wrong though

**bockhold** · #5 (**permalink**) 07-03-2009, 05:05 PM

i can get 16qts in when topped off

**Dave** · #6 (**permalink**) 07-03-2009, 05:07 PM

Quote:

Originally Posted by bockhold

i can get 16qts in when topped off

NOOOOOOOOOOOOOOOO while 1 quart overfull shouldnt hurt anything to seriously 15 is it. Next oil change only put 15 in

**bockhold** · #7 (**permalink**) 07-03-2009, 05:09 PM

Quote:

Originally Posted by Dave

NOOOOOOOOOOOOOOOO while 1 quart overfull shouldnt hurt anything to seriously 15 is it. Next oil change only put 15 in

well i can dump 15qt in the pan. the filter takes almost 2qts. and after running to prime it, i can put up to 1qt in it after and that will be full or a hair over

**Dave** · #8 (**permalink**) 07-03-2009, 05:11 PM

Jarrod I hope you are joking here. 15 total between pan and filter is full

**RadarRider** · #9 (**permalink**) 07-03-2009, 05:12 PM

Quote:

Originally Posted by ianstew

i thought they were the same.....

Quote:

Originally Posted by psdmichael

They take the same amount of oil.

Quote:

Originally Posted by Dave

Yup both 15 quarts. IIRC there was an updated dipstick for the OBS. I could be wrong though

CRAP! I've gotta get this truck started & see what the dipstick looks like after it's been warmed up. I think I did hear the same thing about an updated dipstick though, Dave. Even though the dipsticks were the same length, the bends were different. I'll have to call Ford & see what the skinny is. Thanks, guys!

**bockhold** · #10 (**permalink**) 07-03-2009, 05:24 PM

Quote:

Originally Posted by Dave

Jarrod I hope you are joking here. 15 total between pan and filter is full

well the last time i check and did the oil change, that is what it took. the next time i change it ill double check.

15qts is correct. tho

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