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Old 02-02-2021, 06:38 AM   #1
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What is too high rpm on V-10 motor ?

I have a 2015 FR3. Our favorite off-road spots require a climb to 4000’ on a decent grade. When towing a fully loaded trailer (weight varies but not overloaded) it pulls ok but at times I may come close to 4500 rpm before it shifts. It sounds way too high compared to what I’m used to but is it?
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Old 02-02-2021, 07:27 AM   #2
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V-10's love RPM. 4500 isn't going to hurt it.
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Old 02-02-2021, 09:08 AM   #3
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The transmission shift program should not allow the RPM to go too high. “Close to 4500” is fine. Depending on the engine configuration, peak power is found around 4000.
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Old 02-02-2021, 09:53 AM   #4
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The PCM will create a misfire at max RPM..you cant over-rev it.
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Old 02-02-2021, 02:55 PM   #5
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there is no red line on the tach, because computer will limit revs to a max of approx 5200, so no way to overrev the engine in normal driving
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Old 02-02-2021, 03:42 PM   #6
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Tow/haul spreads out the shift pattern and lets the engine rev a little more in each gear before it shifts gears. If you don't like to have the high revs, you can switch it out of tow/haul and shift it manually. I do that sometimes when going down very steep grades.
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Old 02-02-2021, 04:33 PM   #7
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I attended the Ford school on this engine back in 1998, The Ford engineer said it will run at 4500 RPM all day long. He said to the class of about 25 Ford Techs attending the class, "The Ford V8/V10 is the most precisioned engine on the planet period." I had the V8 version of the V10 in our 1999 Lincoln Navigator. It now has 187,000 miles on it so far. Our 2011 V10 Georgetown 378 has 55,000 miles and we constantly hit revs of 4000-5000 RPMs out here in the Arizona mountains, All it wants is proper maintainance. (It does sound noisier than what we are used too.) Good luck, safe and happy travels
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Old 02-02-2021, 07:46 PM   #8
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RPM's

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Originally Posted by SoCalRV4fun View Post
I have a 2015 FR3. Our favorite off-road spots require a climb to 4000’ on a decent grade. When towing a fully loaded trailer (weight varies but not overloaded) it pulls ok but at times I may come close to 4500 rpm before it shifts. It sounds way too high compared to what I’m used to but is it?
I have the 2017 V-10 with three valves per cylinder. More air movement in and out. I have been all over Arizona and New Mexico, Cakifornia with never hitting 4500 rpm. I don't like to rev it that high. I back off the speed to maintain under 4,00 rpm. My older V-10 (2004) would rev up to 5,00 rpm if I let it. The engine noise was more than I coould bear.
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Old 02-02-2021, 10:59 PM   #9
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Thank you all for the info. I guess it was as unnerving with the sound it makes. I use the tow/haul mode also for decent the same grade or quick stops. I feel better now and will continue to tow with confidence. Since it was mentioned by FrankieJ is there a specific maintenance process other than the oil filter etc. ? Thanks again.
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Old 02-02-2021, 11:35 PM   #10
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Thank you all for the info. I guess it was as unnerving with the sound it makes. I use the tow/haul mode also for decent the same grade or quick stops. I feel better now and will continue to tow with confidence. Since it was mentioned by FrankieJ is there a specific maintenance process other than the oil filter etc. ? Thanks again.

For maintenance, I do whatever it says in the Ford chassis owner's manual.
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Old 02-03-2021, 08:24 AM   #11
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Mobile One 5W30 and Mobile One M1-210A filter.
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Old 02-03-2021, 11:01 AM   #12
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oil and filter

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Mobile One 5W30 and Mobile One M1-210A filter.
Prefer Motorcraft for Ford or Wix filters when other not available. IMHO
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Old 02-27-2021, 06:58 AM   #13
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Prefer Motorcraft for Ford or Wix filters when other not available. IMHO


I have had to run mine a few times on a long steep uphill grade for amile or two. I think it was at 4000 rpm plus . But no problem. The engine can handle it.
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Old 02-27-2021, 09:51 AM   #14
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Prefer Motorcraft for Ford or Wix filters when other not available. IMHO
Who Makes Motorcraft Oil Filters | Bob Is The Oil Guybobistheoilguy.com › ... › Filtration › Engine Oil Filters
Apr 25, 2015 — Mahzurrah! They are made to Ford specification by Purolator and based upon testing of the FL-820s media by Amsoil, it would seem the MC media (93.7% efficiency) falls below a Purolator Classic (~97%) and a P1 (~99%). Yes excellent filters but seem to be a different media than the other Puro's.
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Old 03-02-2021, 03:43 PM   #15
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...

I have an old 2000 Excursion with the V-10 that I used to tow our old TT. It had 118K on it when I got it and did a nice job, at reasonable fuel economy. The V-10 is an exceptionally torquey motor that can rev too. Still, I liked to keep it down when possible. The race-car-rpm noise bothers me too.

Unfortunately the V-10 quit maybe 5000 miles later. I had the engine replaced and got a nice 3 year warranty.

I'm not sure what happened to that first V-10, but the oil pressure quit while the doors were locked, idling to warm up outside NAPA. I found it idling normal except for very loud lifters and no pressure. I'd only driven it about 4 blocks from home.

It just had an oil change at a GM dealer (Delco filter) and was still full of clear oil. I suspect that the oil bypass had opened because of the cold start (about 0°F) and then just stuck open as it warmed up and the oil thinned out.

I initially towed it home, but drove it to the dealer later when it was cold again. It had oil pressure for all 5 blocks. I'm not sure what caused my problem because the dealership did not pull the failed engine pan and let me look like they had agreed to. In a busy shop, it was a bit much to ask, so I just let it go.

I'd heard that Ford was not warrantying new engines of any kind that did not have Ford filters on them, so for my warranty, I bought low cost Ford filters and Ford oil at Walmart to be on the safe side.

The problem with other filters is that Ford engineers supposedly found filter material debris plugging some of the fine oil passages during engine failure analysis and blamed sloppy filter manufacturing, refusing warranty.

I use Ford oil and filters in our Leprechaun V-10 mostly because of this and it's as low cost as any. I change often.

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