Oil Capacity: OBS vs. NBS

[RadarRider]

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]

i thought they were the same.....

[psdmichael]

They take the same amount of oil.

[Dave]

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

[Jarrod B]

i can get 16qts in when topped off

[Dave]

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

[Jarrod B]

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]

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

[RadarRider]

Originally Posted by ianstew

i thought they were the same.....

Originally Posted by psdmichael

They take the same amount of oil.

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!

[Jarrod B]

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