2027 7.3 9 quarts mystery?

Apples · 2026-11-11T09:24:13-0600

DTX2023Tremor said:
I've been adding 9 quarts since day 1 with my truck.

I envy you your foresight! as I do those who did the 500-mile, 2500-mile and 5000-mile earl changes before settling in to every 5K after that, earl analyseees be danged.

Curious, though; what was your initial motorvational justification for doing so? You have a brilliant mind. What're you doing Friday night?

Apples · 2026-11-11T09:33:25-0600

DTX2023Tremor · 2026-11-11T09:43:47-0600

Apples said:
I envy you your foresight! as I do those who did the 500-mile, 2500-mile and 5000-mile earl changes before settling in to every 5K after that, earl analyseees be danged.

Curious, though; what was your initial motorvational justification for doing so? You have a brilliant mind. What're you doing Friday night?

I had just read so many posts about the dipstick being off and so figured if the pan holds 8 quarts, the filter holds about 1/2 quart, overfilling by 1/2 quart would likely not hurt anything (which I know is a highly uneducated assumption). Doing some research on the topic, there are some definite risks to overfilling:

More oil into the intake through the ventilation system. A higher sump level means more oil mist gets pulled into the intake and burned. That adds deposits on the intake valves and in the combustion chambers, and it raises consumption.
Wear on the catalytic converters. Burned oil leaves ash and phosphorus in the cats. Over time that can trigger the P0420/P0430 codes.
Aeration. If the level gets high enough for the spinning crankshaft to whip the oil, it foams. Foamy oil lubricates and cools poorly.
Misleading consumption readings. The engine tends to burn off the extra quickly.
Warranty. A dealer could point to a consistent overfill if an oil-related claim comes up.

So now that I've got the new engine and it's getting the Whipple installed, I'll likely fill with 8, run it a few minutes and then check it again when cool to see if I need to add any more oil. I'm also adding a catch can so it will allow me to better monitor blow-by.

Apples · 2026-11-11T09:57:23-0600

^ ^ ^ Thank you. I feel that some of those claims made above are going a little "over the top" (sic), but, I was leaning anyway towards adding just enough to get the stick's hashmarks completely covered.

If that took only .5 or .75-ish quart, over time that would leave me with a gaggle of quarter-quart bottles and many lifetimes of firearms' lube*.

*The great John Moses Browning, when asked "what should I lubricate my 1911 with?" replied, "30 weight motor oil!" - and these latest generations of synthetic blend 5W-30 when compared to the simple, light gun lube oils offered today give an almost-too-slick feel to the frame-and-slide interface. It really is amazing. I blend Hoppes' gun oil and leftover 5W-30 Synthetic Blend to 50/50 and use it in all of my firearms now. I may stop adding the Hoppes oil when this latest small bottle is empty and just use the Motorcraft.

Blade420Play🔪🏆 · 2026-11-11T15:03:50-0600

McE said:
I couldn’t if I wanted to

I could but.... sharing is not in my vocabulary

McE · 2026-11-11T15:31:02-0600

Blade420Play🔪🏆 said:
I could but.... sharing is not in my vocabulary

Blade420Play🔪🏆 · 2026-11-11T15:33:11-0600

McE said:
View attachment 278800

Oh, I'll share that

Apples · 2026-11-11T15:41:21-0600

dagnabbit, you young whippersnappers and your contemporary popular memeages.

waht's an old man to do. I just feel left out!

Meanwhile, "sharing is caring".

McE · 2026-11-11T15:44:08-0600

Apples said:
Meanwhile, "sharing is caring".

Gross...

Donnie With A Dee · 2026-11-11T17:44:42-0600

DTX2023Tremor said:
I've been adding 9 quarts since day 1 with my truck. If the pan holds 8, there's about another 1/2 quart in the filter, so I suppose I'm overfilling by potentially 1/2 quart. Plus, you lose a little oil over time due to blow by (likely ounces over a 5k oil change interval). How much you lose really depends on how hard you're making the engine work.

Didn't your engine just recently blow up? Coincidence? Maybe.

DTX2023Tremor · 2026-11-11T18:34:00-0600

Donnie With A Dee said:
Didn't your engine just recently blow up? Coincidence? Maybe.

Probably not. Engine failure issue with the 7.3s was traced back to Ford setting oil pressure too low causing the cam shafts to delaminate and mess up the lifters. The NHTSA just launched an investigation on the issue (why so soon?).

DTX2023Tremor · 2026-11-11T18:36:19-0600

Apples said:
^ ^ ^ Thank you. I feel that some of those claims made above are going a little "over the top" (sic), but, I was leaning anyway towards adding just enough to get the stick's hashmarks completely covered.

If that took only .5 or .75-ish quart, over time that would leave me with a gaggle of quarter-quart bottles and many lifetimes of firearms' lube*.

*The great John Moses Browning, when asked "what should I lubricate my 1911 with?" replied, "30 weight motor oil!" - and these latest generations of synthetic blend 5W-30 when compared to the simple, light gun lube oils offered today give an almost-too-slick feel to the frame-and-slide interface. It really is amazing. I blend Hoppes' gun oil and leftover 5W-30 Synthetic Blend to 50/50 and use it in all of my firearms now. I may stop adding the Hoppes oil when this latest small bottle is empty and just use the Motorcraft.

I've been buying 2 gallon jugs and then a case of quart bottles so figure as I take a more precise approach going forward, that I'll dump the two gallons in and then just what I need out of the quart bottle(s) to get it to the right level.

Nu2SDF350 · 2026-11-11T18:53:11-0600

As far as I know, Ford's 9 quart spec change only applies to 2027 7.3Ls. I was able to prove the 2027 oil pan and filter have the same part # as the 2026. I was wondering if Ford could have just changed the length of the dipstick to justify the added quart or perhaps the oil cooler sizing?

Can someone compare a 2026 dipstick length to the 2027 length? (That's dipstick, not dickpic

)

5150 · 2026-11-11T19:18:59-0600

My '24 dipstick is half an inch longer and old school spring steel. Not wire with plastic tip. But it does have same finger loop at top.

Godzilla/Tremornator · 2026-11-11T19:47:33-0600

isn't there a power drop in 2027?

how did they do that?
shorter stroke crank would allow a higher oil level in the oil pan.

just thinking how? why?

Apples · 2026-11-11T20:31:28-0600

Re: Posts #33, 34 and 35...

The hashmarks on the 7.3 Godzilla dip are more than 1 quart from Add to Full...

With 8-quart oil and filter changes (and the inability to drain the very last ounces from the block and sump) my dip NEVER READ FULL. It read half.

Model year 2025. So, I'm adding what it takes, like DTX will/does to get to the full mark.

/that's what's we've been flappin our yappers 'bout so far

Donnie With A Dee · 2026-11-11T21:46:27-0600

DTX2023Tremor said:
Probably not. Engine failure issue with the 7.3s was traced back to Ford setting oil pressure too low causing the cam shafts to delaminate and mess up the lifters. The NHTSA just launched an investigation on the issue (why so soon?).

It seemed to me that the delamination problem was an early 7.3 problem. Are people with 23' and later still have an issues with that same thing? Thought that problem was solved.